RPG Insanity

So, I'm in the Sol Shrine, and it's asking me to make a pentacle appear. I've stepped on every tile I can see, but nothing's happening. The game is not forthcoming with hints, and I'm at a loss. Help?

Are you sure you've checked all place? I've tried all pentacle in that area, including the one at celes place when she picking the flower before and it worked.

I didn't even think about the spot where Celes was picking flowers. Thanks for the help!