Hey, im loving this... but check out this picture here on the pecks.. I think they could be a bit more defined.

I think you should influence the collar bone more so you can see it on his skinny frame. Then i think you should run a slight line through the upper/lower peck area.. kinda distinguishing it. Im not sure about that though, hes not exactly bulk. I also think though for sure that you should run some "stretching" look to his pecks.. i'll show a couple pictures of what i mean .

Pectorals

Just some ideas though, not saying you have to do any of that.. i love how its coming along though, wonderful job! Great detail as well :thumbsup: