It seems to me you're trying to break into a field where most people already know what to do (or think they do): art & photography. Maybe branch out into other areas too? Maybe target writers who want to sell their ebooks -- setting up that is a PITA, I can tell you as a writer. Otherwise, I like what I saw.
EDIT: One other thing, put a yearly fee on it instead of the $7.99/month. Monthly charges seem to inspire uncertainty in people.
EDIT: One other thing, put a yearly fee on it instead of the $7.99/month. Monthly charges seem to inspire uncertainty in people.