I would introduce a sidebar to the art profile page so people can get an idea of what surrounds that piece (derivatives, ownership, etc) without having to scroll down.
When you've developed it a bit more, make sure that in between the click from art profile to evolve an image, there is something other than a sign-up form. You need to show the potential to new users before they will sign-up. As it is now, the majority would see the sign-up and walk away.
Make sure your example derivative is really convincing. Not sure if your market is professionals (who might do this in Lightroom or Aperture), groups (wanting to share professional derivatives privately) or people creating lolcats and so on, but your example for each case should be quite different.
When you've developed it a bit more, make sure that in between the click from art profile to evolve an image, there is something other than a sign-up form. You need to show the potential to new users before they will sign-up. As it is now, the majority would see the sign-up and walk away.
Make sure your example derivative is really convincing. Not sure if your market is professionals (who might do this in Lightroom or Aperture), groups (wanting to share professional derivatives privately) or people creating lolcats and so on, but your example for each case should be quite different.