looking great so far, I love big images like this. Excellent character ideas. I can only think of two things, one, make sure everthing/everyone has a shadow - although I'm sure you're getting to that. Second, perhaps make a few more people walking, currently a lot of people seem to be standing on the spot, a bit more movement would be nice. Again great work so far.
hanging with the squirrels.
this ones not me hehe