I only have 4 problems:
1. The text is pretty bad :S cant really offer advice for that but clipping mask might be better and ditch the motion blurr on it.
2. near his hands is too crowded for me, the effects are concentrated around that area which looks a little strange to me. That part of the render is lost in that brush+clipping mask frenzy, the effects are good but spread them a little more, it should also help the flow.
3. The colour clash between the right and left side, just doesnt go IMO, maybe add some tint of orangy or something to the left side, to make it all flow better.
4. I wouldnt blend or smudg his face at all because it gives direction and also helps to identify the render, now his hair is cut off which looks a little weird.
Otherwise the idea behind it and general execution IMO is pretty good, nice job zak and if i havent already said, Gratz on joining +tA. Keep up with the sigs