Hey Danielle! I totally agree with Sally Tia on this!! Maybe if you brought up the, what I perceive as smoke coming out of the buildings,(?) Just a little to fill the void??
Big thing I noticed though is the difference between your two picture slots on this. The first one does not do the color justice at all, when I clicked on the second one I thought, wow! Try working with one of the many free photo editing programs (do a search in the forums, they recommend a lot) I scan my paintings then I still have to photo shop them to get the colors and light balance I want.
Good luck!!