In advance, pipe 12 ribbon roses four each: yellow, pink and peach. Make extras to allow for breakage and let dry.
Also in advance, make 36 tip 2D drop flowers: 12 each yellow, pink and peach. Make extras to allow for breakage and let dry.
Use spatula and white icing to ice 8 in. x 3 in. round cake.
Use tip 2 and white icing to pipe lines about 1 in. apart beginning about ó in. inside the top edge of cake and extending to various lengths down cake sides. Use tip 3 and white icing to randomly pipe dots on either side of lines.
Attach roses to top of cake with icing. Use tip 18 and white icing to pipe shell bottom border.
Attach drop flowers to shell border. Use tip 352 and green icing to pipe leaves.