Cut fondant. Using oval cut-outs, cut two “F” ovals, one “E” oval, one “C” oval, one “B” oval and one “A” oval. Assemble cactus, trimming as necessary to fit pieces together. Adhere pieces together with fondant adhesive. Let dry 8 to 10 hours on cornstarch-dusted board. Once dried, use dusting brush to dust edges with Spruce Green Color Dust.