I’ve done about as much origami as kid could have done. My parents used to buy colored paper for me, but as I recall, I was equally clumsy as well. Oh well…

Minor nit: Polyhedra is plural, singular is polyhedron. So “simple polyhedra like cubes…” rather than “simple polyhedras like cubes” (”polyhedras” occurs in several places). Same with “tetrahedra” - the singular is tetrahedron.

Have you done much origami? It might help with learning how to do the folding.

Thanks for the Blue Edge link.