Visualize examined idea, and propose it to client. 3DCG and model are thinking tool previously, now finish it as the guide for client imagines real space.
Print out various angles CG as necessary.
Ceiling and wall parts can remove from the model, so client can look and confirm it from various angles.
Bring cut samples of real materials on meeting.
I always make CG and model to think design, but finished these works can be use as enough presentation tool for client.