That hair is so damn kick ass. It really does rock very nicely except for the pokeball. Mostly I think cos there's no shading on it, it doesn't match the rest of the picture, it looks like a sticker on top of it or something. I like the sharp lines you have here. ^^
Yeah, if you were to go over the whole pokeball with one stroke of the offwhite t-shirt color at 50% opacity it'd probably be about an appropriate intensity.
but then again, i hate pokemon, so that's probably just me.