I'm to the point where I can make just about anything if I have diagrams for it, and I can make a lot of things given a crease pattern and a lot of time. But when it comes to making up my own stuff, I still without exception fail horribly. There are two or three things I've either never seen an origami version of, or don't have the diagrams for, that I'd love to make on my own. But I can't even seem to scratch the surface in starting to make them. Oh how I've tried.
My 12th grade calculus teacher said that you can't teach someone creativity, and there are certain things that you either get or you don't. I'm not sure if I buy that. If there are rules that govern something, if there's any kind of pattern that says "if X applies here it also applies over there", then you can learn it and use it in the future. But I have a fear that there are certain things where there are no rules. Creativity may be loosely defined as venturing into territory where the rules are not yet known and no one has ever been before. Consistently being creative means consistently moving through territory where the rules are unknown, which is rather functionally equivalent to living in a world where there are no rules. Which is probably my worst nightmare.
But my goal isn't to forge new mathematical systems. There are thousands of years of tradition here and in the past hundred years there's been tons of formal mathematical progress. All I want is to tweak things that I and other people already know and end up with a bit of a different result. It's not 100% creativity. In fact it's mostly not at all. So I have hope that no matter how bad I am at it, I can learn this. Assuming that "creativity can't be learned" is at all valid in the first place.