I would get rid of the converging verticals. In some scenes they might look OK to make a tall building look taller, but in a buliding this low it just does not feel right to me. I would also add some clouds or other atmospherics to the sky. Now it looks like a model photographed in front of a blue background. Also Photograph a runway or large parking lot. The streed needs a little dirt even if the building s are perfect.The foreground needs a car and some tree branches intruding into the frame. You will have plenty of opportunities to enhance you scene, but don't equate pristine sterility with a great render. A great render needs believability and that denotes some natural processes at work.
F