Ingredients Build it Yourself Gingerbread Pickup Truck Decorating Kit Build it Yourself Gingerbread Pickup Truck Decorating Kit Instructions Click to mark complete - Make wheels. Roll four balls of fondant press flat to 1 in. dia. Attach to truck. - Decorate truck. Use red icing to cover sides with zigzags. Cut small hole off corner of green icing pouch and pipe fenders, hubcaps, windows and door details. - Make tree. Cover tree with green icing. Smooth with spatula. Attach candy. Let set 30 minutes. Place tree in truck and secure with icing.