Before letting child submit a proposal to do their science report model as origami, make sure we can actually FOLD the damn thing. Chambered Nautilus. WOW, did that suck trying to make it work.
Much for ep, on the suckage.
Less for me, because he found the simple version, so we did that instead. Not so cool looking, but still looks okay.
Still - test first on the new ideas before submitting. Proof of concept!