Reminds me so much of a game I've been playing lately. 'Tis a platformer for Sega based on Disneys 'Gargoles' cartoon. I'm sure plenty of gargole-like characters have existed, and you've drawn from numerous sources of inspiration, but this just really stood out for me!
The game includes mainly pixel graphics, and employs some rather interesting lighting shades in some levels. I took the liberty to take some screenshots which I put into a composite picture:
Could be cool if you're looking for a reference. There are more shots of the game here:
http://www.games4win.com/games/gargoyles/On the sketch: I like how you've shaded the space around his feet darkly, really gives the character a nice platform. The lightsource looks neat, really reminds me of the 'Game Over' screen on platform games. The detail on the wings is the major difference between your drawing and the Gargoyle character. I'd imagine texturing them in pixel could be quite tedius, but a challenge all the same. Good luck!