3d stereo notes:
1. accentuate specular lights.
use mirrors and reflective surfaces.
use repeating shapes of differents sizes at different distances overlapping each other.
...falling shaows fall on main objects and theri surface flows.
Also watch for planar surfaces, human 3d mind has strong feeleing for them. they intersect overlap hede behind each other. and light shades them differently

The power of shadows

This is cross-eye stereo image. The fascinating thing about it is different types of shadow, you can clearly see nearest shadow of bench, shadow of some kind of tribune in the middle distance and blurry shadow of window. Just seeng their shadows on flat surfaces gives you and impression of some kind of space and distance.