I really, really shouldn't say anything. So... I'll restrain myself as MUCH as possible. Practice more. That's as light as I can get it.
It's my first try, I know I need practice. Also, I have no experience in drawing so that might also be a big reason this doesn't compare anything like your anime drawing
Drawing anime has nothing to do with him making anime sig. It is probably because he likes anime and was inspired by anime to make a sig. Which is probably also the reason he draws anime.
Fix his shirt lol. Looks pretty nice I guess, for a beginner I guess. I really am not good at drawing, and I never will be.
Try using the pen tool when outlining scanned drawings comes out neater. I have a tablet and I try to trace scanned stuff and it's not nearly as good as pen tooling over it.
Sorry, but thats pretty bad. Really bad proportions, and it just looks sloppy. Keep working on it and you will get better.
You would have made e-guitar cry. Low quality, colors breaking out of lines. Get more practice. The lines are too thick. The orange looks bad since it's spilling out of is shoulders. His ear is a squiggle.