Nice Job, Some Nitpicks
I think his face looks really great, but his body looks a little funny to me.
His back arm seems odd. Either that shoulder is too big or you need to show some of his upper arm, his body shouldn't hide it completely in this case I think.
Also the front leg looks as if its extended (which would just be silly). Bring it up a bit. The knee should come into view and make it obvious that its bent and hes on the ground.
I hope this crap made sense, lol