To apply a textured look for your cake decorating, use a small cardboard comb, available in baking supply stores.
Piping is achieved by using a pastry bag fitted with a metal tip that is held on by a coupler. This is your most important tool for cake decorating. You can make lines, words, shells, flowers, and many other designs on the top or sides of the cake. Fill the bag with no more than 1 cup of icing at a time, twist the top of the bag and keep steady pressure when piping the design. Use your other hand to guide the tip. It is wise to find out everything you can about piping before you begin.
Fondant a smooth white paste, is used in complicated cake decorating. Fondant is kneaded and rolled to cover cakes with a sleek smooth layer of icing. It is also used to make designs that are 3-D. It is less tasty than buttercream, but the cake will look sleek and elegant.