For sun, mound icing slightly in center of cookie and ice smooth. Outline and pipe in tip 2 facial features. Add tip 352 pull-out leaves for sunrays.
Cut out the following cookies: sunglasses using pattern; sailboat using plastic cutter; letters for message, sun and large round for ball using cutters from set. Bake and cool.
Ice sunglasses smooth; outline with tip 12.
For sailboat, ice sail smooth, pipe tip 10 boat area. Attach Elmo icing decoration with dot of icing. Pipe tip 4 string arms with tip 2 pull-out fingers.
For message, ice letters smooth and immediately sprinkle with granulated brown sugar.
For beach ball, outline color sections with tip 4; pipe in with tip 5 (smooth with finger dipped in cornstarch). Add tip 4 dot in center (pat smooth).
For Elmo cake, outline and pipe in mouth using tip 3 (smooth with finger dipped in cornstarch). Ice nose and whites of eyes smooth. Pipe in eye centers with tip 3. Cover Elmo with tip 16 stars. Position cookie sunglasses, securing with dots of icing if necessary. Position other cookies around cake.
The star tip creates the most celebrated, easily accomplished decorations! The serrated edges of the star tip make ridges in the icing as you squeeze it out. Because fill in requires so much piping from the same bag, keep replenishing icing in bag.