Here's mine:

1) Multiple objects in 1 panel. Imagine a big big battle scene where everything has to be consistent.

2) Cars and guns.

3) consistent foreshortening. I can do foreshortening if its only 1 person in the panel but making it consistent with the perspective is a problem.

Strange poses with weird angles.

Without a doubt, vehicles of any kind. I can do them but I need solid reference photos or looking right at them as I'm drawing them. And I never feel like I 100% capture the essence of them like I do with people. Ah well, practice, practice, practice...

same as y'all...well actually anything technologial...

cityscapes

#1: Action. Especially hand-to-hand fights. Luckily my characters are a sneaky lot and mostly ambush each other and use ranged attacks (guns, thrown knives, etc.). I have a real problem making it look "active" and drawing any kind of foreshortening.

#2: Crowds and cityscapes. Any kind of "grouping" of things. Cities are a little easier for perspective, but it's hard to get a crowd to look natural.

#3: Hands and feet. I can draw shoes just fine, but if someone has to go barefoot, we have trouble, especially ankles. I can draw hands with a reference -- usually. Sometimes the reference makes them look worse.

#4: Skinny people. Don't ask me why. I'm guessing it's lack of real life exposure to skinny people. (I can't draw women with small/average bust sizes because I don't know any.)


Oddly enough, I like drawing guns and weaponry. It was some of the first stuff I started drawing really well. I drew the first few with detailed references, but now it comes naturally. I wish I could do that with hands.

Cityscapes that need to be recognizable.

Horses. I'm getting better at them but they're still freaking hard to draw, especially if somebody is riding it because then I have to try to figure out how they should be scaled.

I actually really like drawing guns and I've gotten pretty good at it. Cars and machines are tougher, although cars are much easier than machines, I've found.

Sometimes I can't even draw people at all... Or anything else! Often I have to relearn to draw whatever I'm drawing because the skills don't stay. So everything is hard to draw... Unless you're doing it a lot at the current moment; then it's easy peasy. As soon as you stop or do something else for a while it's back to being hard again. :(

Hmm
cars of anysort
and animals, for some reason
I have a really really hard time drawing animals. D:

1: Hands! Arg takes me forever to get 'em looking ok.
2. Backgrounds...I tend to leave 'em out entirely.
3. Certain perspectives, such as views from above or below. I need more practice with that.
4. Expressing certain actions proves to be difficult sometimes...especially when you're trying to show something that's going on. (If that made any sense... ._. )

Cars.
Guns.
Backgrounds.

And something I agree with:

kitty17
1: Hands! Arg takes me forever to get 'em looking ok.

For people having trouble drawing cars I recommend purchasing a variety of tiny toy vehicles from the toy aisle of nearly any grocery or drug store. You can often get them for next to nothing and they are so realistic in details that they make perfect artist's props models.

Now it's a bit more expensive but you can get miniature models of darn near anything at any well stocked hobbyist's model shop. It just depends on your art budget.

For myself I have finally reached the point where I can pretty much draw humans in any pose or at any angle but ditto the comment regarding practice. If I lay off even for a month then I have a very hard time drawing anything, much less a three dimensional person.

With me it's mostly chronic laziness. I know that the main key to making anything look realistic is utilizing correct artistic perspectives, and by this I mean investing one, two, or three point perspective thought into a scene before I begin sketching in the props or people. Something as simple as a rubbish can looks incredibly different from different perspectives . On the other hand, if you really understand the rules of perspective then just about everything falls into place and you find yourself almost becoming a three dimensional sculptor with your pencil or wacom tablet pen. At least this is how it works for me when I am at the top of my form. Otherwise it is about as difficult and pleasant as pulling my own teeth.

1. Cars, or indeed vehicles of any kind.
2. Consistent foreshortening.
3. Perspective in backgrounds.

Most of it is due to me being lazy - getting reference pictures is all a matter of scouring Google or any other handy resource that's a couple of seconds' typing away - but some of it (like the cars-bit) is due to me being physically unable to draw straight lines. I can't even do straight lines with a ruler - I have to fall back on the line-tool in whatever program I'm using. o.O

I'll practise and get better though, I promise! (I'd better, if I want to get into that art school next fall...)

hands and feet
and believe it or not...females haha dont know why but they always turn out with really manly features

jimmy_genocide
hands and feet
and believe it or not...females haha dont know why but they always turn out with really manly features

A tip on drawing girls - try for rounder shapes. Faces, curves, etc., etc. Round usually = female, while more angular usually = male.

kyupol
Here's mine:

1) Multiple objects in 1 panel. Imagine a big big battle scene where everything has to be consistent.

2) Cars and guns.

3) consistent foreshortening. I can do foreshortening if its only 1 person in the panel but making it consistent with the perspective is a problem.

All of those I have problems with XD.

Those and hands, although I think I'm getting better.

Nicotine

kyupol
Here's mine:

1) Multiple objects in 1 panel. Imagine a big big battle scene where everything has to be consistent.

2) Cars and guns.

3) consistent foreshortening. I can do foreshortening if its only 1 person in the panel but making it consistent with the perspective is a problem.

All of those I have problems with XD.

Those and hands, although I think I'm getting better.

Agreed. Though I'm one of the few who usually doesn't have much aggravation with hands...except certain things like clenched fist from the side, ect.

Profiles used to be farely easy for me...but nowadays they've become really hard! Don't know why...

Excessive realism. Cars. Human feet.

I know I said everything was difficult, but there are a lot of general principals out there and techniques that mean certain things can't be too hard...

All you guys saying "hands and feet", well you've got too of each and presumably you've got a mirror too? They're not that hard, even if they are more complicated and fiddly than the rest of a body.

Guns and weaponry: Basic. Almost all guns are made up of very simple tubes and squared-off handles, very simple. All you need to do is be able to draw straight lines. The easer ones are the less traditional ones without an obvious main gun barrel cylinder.
Swords, knives and spears are even simpler; they're either all simple straight lines with a basic taper toward one end, or have a couple of gentle curves if it's a Katana or something.

Cars and all other vehicles have a lot of reference material out there to represent them. Not to mention the toys... Newer cars have a lot of curves and are rather balloon like, but that actually makes them a bit easier for beginners who tend to draw them like that anyway :)
The simple rule with an ordinary car is that it's a machine that has to work. The doors have to look like they can be opened, the windows have to look like the driver can see out of them, headlights have to look like they can be used, and most importantly; all four wheels must be spaced correctly... with enough room in between for the driver door to open and for passengers to sit... The fromt wheels are generally towards the very front of the chassis, the rear wheel is generally closer to the passenger door than to the rear of the car, meaning that the rear overhangs the road qyuite a lot.

acadia
Strange poses with weird angles.

Strange eons in non euclidean angles.

ozone
All you guys saying "hands and feet", well you've got too of each and presumably you've got a mirror too? They're not that hard, even if they are more complicated and fiddly than the rest of a body.

This is true, i have a piece in my dev art that i drew looking at my hands without some fancy tutorial, and it's the best pair of hands i have ever drawn.
It's also the third pair of hands i have ever drawn.

I think guns are easy, but I used to be a gun nut years ago, so I understand how they work well enough to draw them from scratch. You have to have a firm idea of the visual relationship of their trigger hole to their barrel.

Automobiles, I agree, are hard to draw without aping reference--the old antique cars from the 1930s through 1970s were not so difficult, but the modern ones seem more designed to look "new" every year than actually coherent in design. I won't draw a car without using reference or tracing...there's no point. It's a dead metallic object with weird gadgets on it.

The most difficult thing to me is hands... sometimes they looks like hands and sometimes... :(

even more difficult is hand holding a firearm, like a pistol.
My hands amlost always look weird and twisted.

believe it or not i can draw hands better it they are holding something (gun, cellphone etc.)

same here, but those d*mn Handguns... AARRGHAHAG1!!

I always had trouble drawing any sort of backgrounds, especially with perspective. So to make it easier for myself in my comic... I use no elaborate backgrounds and no perspective most of the time lol!

And as odd as it seems, it gets more and more difficult for me to draw hands properly. It's strange, because it was the easiest thing in the begginging, when I was basically re-learning to draw after an 8 year hiatus.

I'd love to say hands because I do have a hard time getting them right (mainly fingers, I've worked out the basic shapes of hands to the extent that they're not so much of a mystery but the fingers always come out lousy for me). But I think generally I'm pretty bad at everything.

What about perspectives of circular/curved objects? (tires, plates, doorknobs, etc.)

Perspective of square objects is easier to do.

Heads. I can draw bodies almost perfectly when I try (except for fingers), and faces I can do reasonably well, but when it comes to drawing the shape for the head all my talent just runs away.

I stuggle with elephants too.

1.Hands....(hands down...hahahhahaha...i'm stupid)
2. Faces....
3. vehicles...

Clothe creases
Surface reflections
"Perspectives" (You know what I mean)
Proportions (I can only draw characters in 2 scales)
And memorizing sun/shadow position. I had one nasty incident where the shadow shot straight at the sun.