Thought the skin has gray, desaturated face, you could give a little bit more with white and black contrast. Try to add some faint glow around the eyes, to give it a bit more mystique feeling. And, please, what's the catch with the right yellow ear? Maybe it's a part of the cloak, but it looks quite misplaced. Overall, the icon is a little bit boring, mostly thanks to the gray face of the skin (not your fault, then?).