There's a fun (and easy! ) tutorial up on the ForeverJoy blog *here* showing you how to add your own awesome painty edges to your layouts!
i'm glad this one got bumped. i didn't know it could be so easy to make a painted edge. Thanks @ForeverJoy and @jk703
I don't understand what to do once I'm in liquify. My liquify doesn't look the same and I'm not getting anything painty-looking at all.