Pour Color Flow icing over smaller hearts and let dry. Decorate Cupids with tip 2 dot and string facial features and hair, tip 5 diapers, tip 5 bows and arrowheads, tip 2 strings and arrows. Add tip 352 pull-out wings. Outline large heart with Color Flow icing and tip 3, then thin down icing and flow in each section. Let dry overnight, then pipe tip 2 message. When completely dry, attach lollipop sticks to backs of cookies using full-strength Color Flow icing.