Good looking airplanes, especially for brush work, Platypus! I often use brushes for lack of a quality airbrush and I know how hard it is to get good results.
I often make wargame models out of whatever junk is at hand - this one was made of paper, pieces of a cardboard shipping box, attic insulation, PVC pipe, spent .22 shells, balsa scrap, piano wire, a golf tee, and God knows what else. It was great fun!