1. Place a block of floral foam in the pot. Insert three 1/4-inch wooden dowels in the bottom of a plastic-foam cone. Place the cone on the pot, inserting the dowels into the floral foam.
2. Cover the cone with damp sheet moss. Slice blood oranges in half (if unavailable, use navel oranges). Starting at the bottom of the cone, secure each orange half to the plastic foam with V-hooks made from 18-gauge copper wire as shown, below.
3. Fill in exposed areas with moss. Tie a glimmering ribbon into a bow to trim the topiary, allowing the ends to cascade.