Decorating Tips demonstrates how to use the star tip to decorate a cake or cookies. Use a medium consistency icing and position the bag at a 90 degree angle. Hold the tip 1/4 of an inch above the surface of the cake or cookie. Use the count squeeze, stop squeezing and stop to create a delicate star look with a size #13 star tip. With a size #18 star tip, shorten the count and put the icing stars right next to each other to fill in a cake. Use different colored icings as accents. You can also use the star tip to create a border around a cake. If you pull up the icing quickly, you can get the appearance of grass, spikes and foliage for cake illustrating. The star tip is a great tip to start out with when decorating cakes.