Apply this expression to your 'Scale' attribute and it'll automatically 'flip' the layer in 3d space when the camera goes behind it. This way, your text will never be seen from behind, for instance.

This brief tutorial covers the compositing technique of light wrapping.

This is a preset that you can use on green screen footage or just general compositing.

This script is used to create a 3d cube. You can later replace the different sides and spin the null around for easy animation.