Need crit. on Endless runner environment Thread

Hello there ppl,

I am independently working on an endless runner game intended for mobile platforms. Setting of the environment is a Street from Paris.
Need some crit on some of the environment work done so far. Camera angle will be approx. as in the images attached.

Please comment.
Dropbox.com
Dropbox.com
Dropbox.com

Thanks in advance for all your input.

Best,

The city itself looks great, but the sky could use nicer clouds.

@glazedkoala will definitely look into it and improve. thanks for your feedback.