Agreed, Now you're set. Throw some cool effect in there, and maybe add a small light source to that area that's brighter above his head. Nice BG now just spruce it up with some totally sweet effect c4ds!
it looks like it has alot of potential if you finish it, the background is set and now you just gotta add in some effects and foreground toa dd in depth and everything and then a light source. look at hoplite's suggestion, it makes sense