I really admire your art. the "Felony" doodle is SUPER COOL:)
PS- Are you going back to school in Aug/Sept? I see you got expelled. I know it sounds like preaching, but really, you have to stay in school. It is the most important thing you can do for yourself right now. How did you get expelled? Focus on art, squeeze by the classes you don't like, zip your lip even though you don't want to or maybe don't agree with a teacher...whatever it takes you have to finish school some how. Art is the best place to vent and express yourself. Keep it up!! :)
Hey kiddo...I ran out of space responding to your comment so I'll finish here. I do not use circles to fill in space. I use lines. I like your "grafiti" type style. To avoid all those large areas in need of coloring, maybe create some patterns or images within the shapes, or, like the way you go around the outside edge with black, fill the inside with lines that trace the shape of the design, switching colors.
Thanks for becoming a fan. =] Do you have any stuff that you're going to post?
Re: large spaces... it's all about speed. If you go slow, you will see more lines from the overlapping lines. If you go fast in large spaces, the ink tends to be more even. Really, paint is better for big stuff.