Foliage is always difficult to model when you're a "noob". The Chinese (Japanese?) scene has one tree and it's a pretty simple one. The other scene has a few trees and grass, which is something even experienced artists find difficult to get right. The Japanese (I'm sticking with Japanese, since there is a bonsai tree there…
I like 3 of the pictures. A) The large tall structures with the climbers B) The Japanese cherry blossom tree in the entrance everyone's raving about and C) I like the building/street scene with the hanging lights.