You've got a great amount of detail here, which is nifty. Push your values further. Having most of the work in that middle grey area, with a few jumps to pure white, is limiting how great the work could be.
That's all there really is, but DA wants more words for some asinine reason. Shall I write a poem or something?
Also, take a look at the empire state building back there, it leans a wee bit to the right, and seems to be totally borking an otherwise really solid example of two point perspective.
Five more words and I'm there. Oy.
And don't worry about my stars - 3 for me is average at a pro level. Most of my drawings I would rate a two.