Three minor things I would consider changing (I am non-expert, so just my opinion here...)
1) Would've dragged the chair at the bottom left of the out of the frame, or preferably;
2) ...Framed the image a little closer. IMO the extra space doesn't add to the image, and you'd be better able to make out the detail of the artwork if it was taken closer. (It's also minimise the bright area on the grafitti on the left of the image...)
3) Rotate the image slightly
to level it out (it's bugger-all, but I'm OCD about that...), and maybe try croppin off some extra "space" from above the graffiti?
Exposure, colour, and perspective are all nice though, so just being deliberately picky really. Hope that helps, or at least gives you some different things to try out.