I agree with everyone that it looks like he's been on a diet, and the face could have used some work rather than some shading. But, the wings alone are amazing and detailed. Some more details could have done wonders, but it's a nice start. Shade or color it!
I wish i had more hand so i can give them titties four thumbs down. lol no that is an awesome picture. Amazing actually probably the best DK picture ive seen.