Prepare cakes for
stacked construction. Prepare and cover sheet cake with blue-tinted fondant; smooth. Position duck cake on board cut to fit. Ice beak smooth, pipe-in tip 8 eyes. Cover body with tip 16 stars; cover wings with tip 16 pull out feathers. Position sheet cake on fondant-covered board; position duck cake. Place hat on duck. Cut a 1/2 in. wide blue fondant tie and position around neck; cross ends. Push 8 in. dowel rods horizontally through cake, 1 inch from top, leaving 1/2 in. exposed at each end. Attach wheels to exposed dowel rods with fondant. For pull string, insert licorice in flat jelly candy; insert other end in cake.