Cover cakes with reserved melted candy. Immediately insert toothpick in center of cake top to make a hole for flower pick. Attach cakes to candy platforms with melted candy. Remove toothpick; refrigerate cakes until firm. Roll out fondant 1/8 in. thick. For square cakes, cut 2 x 1/4 in. strips for sides and an 8 x 1/4 in. strip for top border; attach with damp brush. For circle cakes, cut dots with narrow end of tip 12 and an 8 x 1/4 in. strip for top border; attach fondant with damp brush. Insert picks.