4-Color Striped Cake: Using white icing, ice cake smooth. Prepare four decorating bags with tip 352. Fill bags separately with light blue, coral, dark blue and green icing. Using toothpick and ruler, mark four horizontal lines around cake, about 1 in. apart. Holding bag horizontally with two points of tip vertical to cake, pipe ruffle, following markings. For best results, start at bottom with dark blue, then continue upwards with coral, light blue and green.
Vine Cake: Using white icing, ice cake smooth. Prepare decorating bag with tip 352 and green icing. Holding bag with two points of tip vertical to cake, pipe swag around top edge of cake. Using leaf technique, pipe leaves on swags.
Coral Cake: Using coral icing, ice cake smooth. Prepare decorating bag with tip 352 and remaining coral icing. Working from bottom to top with tip horizontal to cake, pipe vertical rows of shells around sides of cake.