I like it all except the leg. Seems like the front is too plain.
Head looks awesome though. I know that request you're doing this for.
If he doesn't buy yours, and you make one I like, I may buy it from you. Lol
That looks really good man.
Maybe some more of that bubble-style of graffiti that you see sometimes. It looks really cool, and I think that's what the guy is looking for.