

And you are using a good looking texture base (the one without windows).
Two things to concider:
- The shading of the red roofs of the first tower, the roofs facing left (the shaded side) should be a bit darker (or the ones facing right should be a bit lighter).
- The dirt in the middle doesnt seem correct there. Either make the top floor a bit narrower than the bottom floor or dont use that effect at all for buildings with the same width (or use the effect that separates the part with no windows at the bottom with the first windowed part)