The character looks ok, maybe a bnit of works needed with the topology on the body, but its hard to see without a wireframe view.

I had a look at your animation, to me you need to add some weight to him, like when hes flying its like hes floating almost weightless, not flying, some more movement of the wings and corrisponding total movement would look better. Same when he;'s landing, he just lands, no forward movement etc.