Bryan,
I am not going to help you where to find your trees
but I quite like this presentation approach of having the architecture photo-realistically rendered with sketchy bits like trees/plants, cars and people... a sort of collage, not trying to present that as 'a real, already built' building. It somehow preserves the value of actual work of an architect keeping your output more artistic rather then pathetically overkilled that introduces the sterile atmosphere of a suburban life from David Lynch's Blue Velvet movie. Good job mate.
...just being a bit arty-farty...
::rk