User blog comment:Radical M/Drawing Tips?/@comment-1153194-20110228042716

I think they look pretty good. The main issue I see is the proportion. Take a good look at the actual TDI characters to get that down. Also, try to color over with white the parts you need to erase. Those little loose edges around the ends. That's about all the advice I can think of. I'm sure your art will only get better in time. :)