Nail Polish

[leftof-thedial.livejournal.com]

I am a nail polish addict. I'm sure there are people with bigger collections, but I have a significant amount of polish and am beginning to wonder "how hard can it be to MAKE my own?" I'm not talking frankens (the mixing of pre-existing polishes into a new polish), I'm thinking more along the lines of what Lynnderella does and things. Getting pigments, sparkles, and making it from scratch.
How do people do it?
Does anyone have experience making their own polish? Where do you find supplies?
I'm not really interested in selling nail polish for money, because I might suck at it, but I do want to try to make my own, for myself.
I'd appreciate all the help I can get.