Nice job :yes:
Crits:
1) The middle of the hair is a bit wide, I guess you'll skin that to be two spikes but I think it would look better if it was modelled as two seperate spikes. The split is about two thirds down the middle, but on yours its only about one quarter. Also the widows peak is a bit blockish and square atm, I think it should be more rounded.
2) The shoulder-to-bicep transition looks a bit strange, the shoulder slopes down into a 90 degree arm angle, i'm not sure how to describe it really, but it doesn't look like the arm is attatched to the shoulder muscle properly. I also think the arm could be a little longer.
3) The arm guard should show his wrist and should cover a bit more forearm, basically slide what you have now up his arm a bit more
4) The top of his abs look a bit slim compared to the ones below, they were basically square. (sorry the drawover came out a bit badly but hopefully you know what I mean).
To explain the hair a bit better:
Squarer abs:
Drawover (mspaint)