I like this drawing, it is very nice and artistic. there is a little bit of grass, and it looks like real
Honestly, i can't see anything bad there.
Maybe just one thing...
Trees, factories and houses looks like they are painted with a brushes , pencils or something like this, but pony looks like he is made from modeling clay. And for me it is not really nice, maybe you should draw him and houses the same drawing style, because it looks like pony it's just from diffrent painting.
I Don't know why, but i see a deep meaning in this drawing.But now i do not start writing about what i see here.

I would rate it 8.5/10


P.S sorry for my bad english :/