Nothing really seems to fit properly. It gives the impression is of a mask with a wig stuffed in, because there's no illusion of depth. The hat looks a bit slug-shaped, and doesn't seem to fit the head. All the anatomy's a bit off mark.
I say give him an ear to make him less maskey (not like mine, though, it's terrible. Actually look at a picture of an ear while you do it, like I didn't, and it'll shape up a lot better), change the shading to give him more depth, and change the shape of the hat to fit his head. At first I thought the eyes were placed wrong, but I haven't moved them. I did move the far side of his face in, though. I also changed the feather - I think it ought to be more round. If you want to make it fluffy, try to do do that with shading. Breaking up the edges compromises its featheryness.