There is no reason to submit a picture with largest dimension smaller than 640px. Bright edge of doorway on the left a bit distracting. Focus a little soft.
hard to tell whats going on, besides the obvious hit on a cig. perhaps a wider angle angle would add some atmosphere (depending on what the surrounding looked like)
Nice concept. I like the composition and idea. Not crazy about the bluish tonal range. The shadow could be a good effect, sets the right mood, but I think just a tad lighter to show a little bit of features would be better..