Are you rendering in 3d studio max? You might want to try either marmoset toolbag 2 or an actual game engine like Unreal Engine 4 if you plan on having all your props come together in an environment. Foilage (at least for me) really just comes down to finding the right shapes of planes that can mimic the sort of pattern…
I used some houses from the town of Gilneas from WoW as a reference for this one. I tried to be more creative with colour mixing here. The reference for the architecture of the house was found on google by searching "gilnean house" or something like that. As for now, I like to only use the one and same diffuse texture on…