I hope this opens a whole new are for sci-fi paper modeling! the cutting and separating the nacelle domes might affect the illusion. I think that it is contrasting colors, shapes next to other shapes, that make this look like it is spinning. the tos com disc had the same kind of thing, and it might be kind of a double exposure of the same image almost on each other too. I really know nothing about optical illusions, I was hoping someone would be an expert on them around here. as far as the nacelle domes go, the optical illusion could be printed and then a cheap acrylic globe or half globe could be placed over it for the effect on the warp engines. I lack the resources on this but will try to get to Michaels or somewhere and see what I can throw together for a test.