clean comps, get rid of non essential elements and comment
build comps so that changes will automatically propagate, rather than having to implement creative decisions over multiple comps
expressions to automate repetitive tasks and so that changes are automatically applied. For instance, adding shadows or brightness to objects around the boxes. ideally, solid layers with masks simulate “shadows” or “highlights” in the shot, then this is automatically changed in transparency based on what is appearing on the boxes.