Playing around with some paper textures of a basic building still a lot of work needed before it looks realistic....
I like how the texture on the roof turned out on this building i changed the uv's so that it look like it had been folded into place, AAlthough it is a very basic build it would suite our paper theme well. I could improve this by changeing the texture on the walls to a more realistic paper texture and possibly add a bump map to give it more of a 3d feel. Although the building looks 3d the walls look flat and if they were to represent being built from crumpled paper they would need to look rougher, i think adding these textures would acheve this without having to alter the actual faces of the building.