I made the cap out of half of the Wilton Ball pan and a 6 inch round. The rim what made of gumpaste. I tried using fondant on the last cap I made and it flattened when I put in on the board, despite the 3 days of drying time I gave it! I think next time I may try a half and half......I also tried improving on the shape of the rim for this cap. I took a two litter pop bottle, cut off the top and bottom, cat a slit down the "tube". Then I slid one side to overlap and the other side to be more open and stapled it. The open side went flush to the cake and the "pinched" side was the from. I think it gave me a good shape. I was pleased. TFL!!!