The stop sign really adds a lot to this piece. Good work on the shadows. The palette is warm and pleasing. I see 3 small things on this to that would punch it up a bit:
1: On the large building a bit of shadow on the ledge, as in the second tallest building
2: The building with the 4 windows might work better if you darken the panes as in the other buildings
3: The sky in the large building could use a bit more softer whites. It looks painted around the building rather than being the bg that you did so well on the other side
These are really easy fixes if you choose to do them,
Other than that, an excellent artwork.......................TJ
PS I admire artists that ask for honest critiques.......