At least 3 days in advance: Use patterns to make royal icing scrolls. Copy patterns and tape to cake boards; tape waxed paper over patterns. Spray with pan spray; wipe off excess with facial tissue.
Use royal icing to cover scrolls with tip 9 outlines; pat smooth and flatten slightly. Let dry 24 hours. Turn scrolls over and overpipe backs; pat smooth and flatten slightly.
Let dry 24 hours. Use brush to paint outer edges
with thinned royal icing to hide seams. Let dry
Make 30 single scrolls for cake sides; 8 small double scrolls for top of 6 in. cake, 10 medium for 8 in. cake and 12 large for 10 in. cake