He looks like a very cool character. Drawing wise, I think his chest is a bit big, and could be a tad bit narrower.
I also can't tell if his eyes are closed or not, or if he just doesn't have any eyes/pupils.

Design wise, I don't get why his pant leg is torn off so high. It looks really awkward, and would actually show his crotch
His arm that's going behind his back should either have those stitches shown or not. The other arm doesn't have them, and the one that does has them end abruptly.
His wings also wouldn't let him fly unless he has some skin in between them, like a bat's. Unless, he's not supposed to fly, which in that case, I have to ask why wings anyway?

For colors, I'd stay away from red/blood red as much as you can. Black and red on an evil character is a huge cliche and should be avoided like the plague. Stick with some colors people normally don't use, like puce green, shades of brown, and gray/purple mixes. He looks like a deceased character, so puce green is always good for the dead. A pale puce is always good for the skin, and not just a pure white (another cliche I think).

Good luck!