Make turrets one day in advance. Use a knife to cut dowel rods to the following lengths: 8 1/2 in. (two), 4 in. (two) and 3 in. (one).
For turret peaks, use a knife to cut a mark in sugar cones to the following lengths starting at tip of cone: 2 1/2 in. (two) and 2 1/4 in. (three). Soften cone by dipping wide end of cone into glass of water to marked heights. Remove. Use knife to trim marked heights. Let dry.
Tint 3 oz. fondant rose. Use fondant roller with purple guide rings to roll out fondant 1/8 in. thick. Use brush to cover dried sugar cones with piping gel. Cut three strips, each 3 in. high x 4 in. high. Cover cones with fondant strips; trim off excess. Reserve remaining fondant.
Melt white Candy Melts candy according to package directions. Use parchment bag and melted white candy to outline rim of dowel rod. Attach turret peak to dowel rod. Chill until firm.
For turret windows, tint 2 oz. fondant violet. Use fondant roller and pink guide rings to roll out fondant 1/16 in. thick. Use knife and patterns to cut out four medium windows and three small windows. Reserve remaining fondant. Use brush and piping gel to attach windows to turrets.