I think getting cool artists on the page is one of the key factors of success. Therefore I'd suggest you'd outline the process for artists a bit better - simply

I think getting cool artists on the page is one of the key factors of success. Therefore I'd suggest you'd outline the process for artists a bit better - simply give the "artist signup" page a little more love (e.g. mentioning how payment works etc), everyone who's about to sign up knows exactly what happened. Awesome idea anyways, already passed it on!