That's some nice, clean line art you've got there, but his pose is a little odd. It almost looks like he's jutting his hip out.

I envy at the straightness of your lines. My hands shake too much for anything to be that perfect even if I have to hold my hand down. Nice picture

My only thing is, his left foot is bugging me and I don't know why. Just the angle of it. Looks weird to me, but it's probably just me.

Very clean, I like it...but are his shins supposed to have grid-lines on them?