Mix remaining 1 pk. fondant with 1 can gum paste. Divide mixture into 3 sections; tinting 1 green, 1 yellow, 1 violet. Roll out 1/8 in. thick and use large end of any tip to make polka dots. Attach yellow dots to blue cake and violet to pink cake with brush dipped in water. Use smallest star cutter to cut blue stars (blue fondant is left over from cake) and attach to yellow cake with brush dipped in water. Using pizza cutter, cut fondant ribbons 1/4 in. wide and wrap around wooden dowel rod for a minute to hold shape; slide off and let dry for 24 hours.