To make windshield: place pattern on cardboard surface and cover with waxed paper. Tint melted white candy blue with candy color. Outline and pipe-in pattern with melted candy in cut parchment bag. Let set and carefully remove from waxed paper; set aside.
Position mini-loaf cake on foil-covered board. In buttercream, pipe tip 12 band around bottom of cake for bumper. Cover remainder of cake with tip 18 stars.
Using buttercream, attach candy wafer steering wheel, round jelly candy wheels, candy-coated chocolate headlights and hubcaps.
Pipe tip 21 clown and tip 18 star hands; insert clown head. Insert windshield. Insert spice drop on lollipop stick and insert stick in cake for antenna.
The star tip creates the most popular, easily accomplished decorations! The serrated edges of the star tip makes ridges in the icing as you squeeze it out. Use for borders, details such as buttons and facial features, flower centers, filling in cakes baked in shaped pans.