- noise reduction (masking foreground)
- increased saturation (changing hue of cyan to a more blue)
- increased contrast using levels/curves
- dodge and burn layer to darken BG
I made the building more "vertical" with Photofiltre. I know, I lost part of the streetlight, but that's inevitable with that tool. I also sharpened it a little.
Poster on the staircase. I shot this from an angle to set that reflection off centre. I then corrected perspective as well as I could. The reflection comes from the window, I didn't use flash.