Very expressive! Also, nice use of warm and cool colours.

I was going to vote for this one , just love that expression on it's face, but didn't find it .... sorry dude

Thanks for the comments guys. I agree that the wrinkles aren't great. I had a few attempts at them and couldn't seem to get it right. As for the chin, I don't have the sharpest eye when it comes to shading, so I can't quite picture what should be different.

Very nice clusters! I Still think the wrinkles look wierd >.> Awesome piece nevertheless! 

Pretty good, except that weird (pillow)shading on the chin, looks like he's biting his lip.

Very good use of the colors!