The only way to get better at stand-up is to do loads of gigs, and I don't know. I spread myself pretty thin to get the stage time. I'd love to do more, really.
Twitter taught me how to become better at writing jokes because it forces you to chip away at all the extraneous words.
The thing with stand-up is, I really enjoyed it, but I kind of loathed it as well. It makes me feel physically sick.