Am starting to think that I ought just stick to graphics.

No! I mean, your graphics are good, but we wants fiction, precioussss, yes we does.

I'll probably start it, get about 3000 words, and then decide that it's crap and scrap it altogether, which is roughly the point that I'm at with my other fic.

That's when you send it to someone you trust and get their opinion; sort of a pre-beta reading. I'd be happy to do that for you, if you'd like.