3 DAYS IN ADVANCE
Make lace arches. Tape arch patterns #1, #2 and #3 to cake boards; cover with parchment paper.
Prepare Color Flow icing following recipe directions. Use tip 3 and full-strength icing to pipe 260 of arch #1, 350 of arch #2 and 240 of arch #3. Make extras to allow for breakage. Let dry 48 hours. Carefully remove from parchment.