Clever Brothers kits and paper are nice to work with. The photo shows a kit bashed structure using an Ameri-Towne garage atop a Lionel Freight Station. When I saw your sketches I thought of using two garages for most of the structure and fill it with model wood for the frame, card stock or foam board for the solid walls and then your choice of Clever Brothers paper for the outside walls. Have you seen outside walls covered with spackle or dry wall cement which has been roughed up? When dry and painted white, it resembles stucco. John in Lansing, ILL