Your effort and results are terrific.
Roy Lichtenstein used others original ideas and changed the format. I don;t think there was any copywrite problem there. The polyhedra is offered free. You are changing them considerably. I don't mean to diminish the effort of the person creating the forms. they are fantastic. But is the concept of a sphere projected on paper copywritable by this person? Are those plans for creating the forms original? The forms themselves have been around for quite a while since the ancient Greeks. I'm not sure if the forms themselves are copywriteable (is that a word?). I'm sure that your art is copywriteable and could stand on it's own. the designs are original and unique. The forms themselves I don't believe are. Does Rand McNally pay a copywrite or royalty fee to the person who created the globe projection (and would that person be Mercator?) I want to pay for your art on the stars . I love your art. It's so tessellated and Escherlike.
My plan is to use them in my classes as an extension of math and art. I also enjoy making paper models and would make them for myself.
If your very concerned about the issues you could always ask for permission from the person who has the polyhedra web site. That site is fantastic for geometric forms.There is a link to you from there already. That's how I ended up here. I understand your concerns. I am not an attorney ;I am an art teacher. You could also create those punch out books that are sold in Barnes and Nobles. But I think you could get more bang for your buck on the CD idea. You could also include the designs that could be copied and put on to other forms, as in textures. Perhaps adobe would also be interested in buying your original designs to be included in one of their products. I think there are lots of places you could go with this. But the one thing I know is that you don't want to spend your time cutting and gluing stars together. You want to spend your time creating art ie; your designs.