Bake and cool cookies. Turn cookie upside down so cookie stem in facing downward. Ice cookie smooth in violet icing. Pipe tip 12 horizontal black band 1/2 in. from top edge.
Position cookie on waxed paper and use Leaf Green/Lemon Yellow combination icing to pipe assorted size balls use tips 5, 10, 12. Insert candy stick.
Print tip 2 message. To pipe tip 16 striped flames, use spatula to stripe insides of parchment bag fitted yellow icing. Fill bag with orange icing and pipe pull-out star "flames" under cauldron; insert pretzel sticks.
*Note: Combine Leaf Green and Lemon Yellow for green shown.