o mai gawd, I love ths!
I'm a sucker for red and black u.u
Some more adjustments wouldn't hurt though. For example, adding a glow on the red parts of his clothing would look awesome; darken the edges of the left side to make the render a better focal, because there's a lot of "wasted" space on the left, maybe you should crop the canvas to help the render become the main focal; definitely make the render blend more with the background; lastly, you should either burn the light glare on his shoulder to better fit the dark theme, or add a light source so that the glare makes sense, because right now I don't see a light source capable of that much reflection @_@.
I appreciate that you're one of the few people that still post signatures rather than avatars signatures are the tough things to make.
Overall I really like this u.u