Trace three images of the cat pattern onto waxed paper; place on a baking sheet. Place another sheet of waxed paper over the top and secure both to baking sheet with tape. Repeat all steps.
In a small microwave-safe bowl, melt 2 oz. of candy coating; stir until smooth. Cut a small hole in the corner of a pastry or plastic bag; insert #3 round pastry tip. Fill bag with melted chocolate. Pipe outlines of three cats and fill in centers.
Place a pretzel stick at bottom of each cat for broomstick. With sprinkles, add eye and collar on each cat. Melt 2 oz. of additional candy coating; repeat for remaining cats.
Melt remaining candy coating. Cut a small hole in the corner of a pastry or plastic bag; insert #3 round pastry tip. Fill bag with melted chocolate. Pipe a small amount of chocolate on one end of each pretzel stick; attach potato sticks to form broom bristles.
Melt vanilla chips; stir until smooth. Place in a pastry bag with a #3 round tip. Pipe lines where broomsticks and bristles meet.