It's nice, but I think it can use some more work, here's a drawover:
-Mainly use it for the arms, which need a better shape.
-Hands are way too small and shaped really weird, I drew a fist in the drawover but you should manage with proportions.
-Check the waist, you got the belt too thin, or the shirt falls down on it, which isnt good.
-Make shoes bigger, they are way too small compared to the rest.
-Hair isnt shaped right either...the front spike needs to be more thick and curved, rest of the hair...well, just follow the drawover as much as you can :smile:
Good luck man =D looks nice so far