Nice. The only other thing is i might get rid (like someone here already mentioned) that lamp post that is in the middle ground. It just feels forced there, and that might give your alley way a little more room to breath.
You can see some of the points i made on the paintover, which looks great. Just like painting textures, when you have your overall comp and first pass lighting, you want to push it to make your highlights brighter, your darks darker to really frame and set the mood in your scene. Then you can add some backlight with secondary and tertiary colors to compensate your scene. I am a firm believer that lighting can determine how great your end result turns out to be. Can't wait to see an update with all of this feedback!