I like it, but there is something about the glass that isn't right (not sure what really). I think you should split up the floor into slabs or something, add some textures to the piece. You could also border the floor with the edge of a road or a bush or soemthing similiar as it seems quite bare.

apart from aforementioned issues, your shadow is off as well, the overall shadow direction appears to be topright, but on the ledge halfway high, it suddenly goes straight right ..

same with the man and the menuboard besides him.
Man goes right, menuboard goes topright.

also, apart from the colors being on the saturated side, the walls could do with some 'texture' they look kinda bare ... perhaps make it stucco with cracked parts through which bricks show ... make it more interesing, more details. don't give it all away in one go :)