Uhh... a 3 or 4 out of 10, I guess. It just looks like random scribblings in some kid's notebook (especially since it mostly consists of Sonic and Pokemon fanart).
1. Learn how to re-size (as in shrink) your scanned images before posting.
2. Do not post digital photos of drawings. If you can't scan it, don't bother posting it.
3. My rating of your artwork depends on how old you are. If age is not a factor, I'd simply say you have a long way to go yet.
4. I see it's mostly fan art. Drawing fan art is good for you; never let anyone tell you different. Keep drawing whatever you like from TV, as long as it helps you improve your skills.
5. Never ever ever do sprite comics. Whenever you make 1 page of sprite comics, 10,000 brain cells die in the artistic region of your brain.
FIGHT current chapter: Mother's Den
FIGHT_2 current chapter: Prime Directive
Most of us here, we have started like this because I did start like this scribbling and sketching from TV until your style will develop!
If you enjoy drawing, I recommad to keep on doing it and don't hesitate on drawing whatever comes to mind! Don't worry, if your drawing doesn't look like the same thing in your mind but keep practicing because by time, you could whatever the heck you want!
Never be afraid to draw anything... even if it's wrong! Art isn't perfect so, don't be afraid to committ! If you want to do it, just do it! If the drawing comes in head during class, just sketch it somewhere but it's a good start if you want to go anywhere!
Good luck, dude! I hope for the best for you because you do have potential!