I'm pretty much self-taught with photoshop, and most everything I know has been the result of trial-and-error and "Wait... that's kinda cool... what did I just do?"
So today, I was working on some images for a contest in one of my LJ comms, and found another 3 commands that I didn't know existed. Played around with them all afternoon, testing different things, and now I can go from this:
to this:
I'm pleased. :)