Ooh~ nice atmosphere. :) It fits his expression well.
Though, there are a couple of spots on Dark with extraction issues. XD Don't be afraid of cutting into the line a bit. At worst, you can always add a 1-px dark outer glow to compensate..
Hm.. I'd also suggest blurring out the wood a bit. Since Dark's shirt seems a little blurry already, and he's in the foreground, everything behind him should be less sharp. And it's raining, so that factor adds, too.
Ahh~ anyways! XD I'll hush now. Nice wall to match a lovely piccy! Keep it up.