Cut 1/4 in. wide strips in various lengths from 6 to 12 in. Set strips on side on cornstarch-dusted surface and shape into spirals; let set 15 to 30 minutes. Use royal icing to pipe tip 2 outline on back edge; attach to cake sides in random order. Mix Pearl Dust with small amount of lemon extract; brush onto bottom borders and edges of all spirals.
At reception: Position cakes on stand. Insert top spirals. Cut drinking straws to 5 in. long; attach to 50th pick for extra height. Insert pick.