It looks really good, despite being simple.
I think some more interesting depth and layering with the buildings could take it a step further though.
You could push the silhouette further too with chimneys, balconies, architectural details.
I'm really loving the shading in the street scene!
But I think you could convey depth/perspective more if you didn't just use straight angles.
I did a quick something, but I overdid it with details, some of it works, some does not.