You can never be short of ideas to decorate a cake. There are hundreds of books and websites related to cake decorating, you can even join special cake decorating classes.
A little idea and your imagination can create a beautiful piece of cake. Just by looking at different decorations you can get a rough idea about your cake decoration, and you can improve on the idea with your creativity.
Besides the ideas for decorations, there are some other things that should be kept in mind before you go for cake decorating. You should have a knowledge of icings, what kind of icing should be used on what kind of cakes. There are different types of icings which are used for different cakes. Then there are some equipment used to make you cake decorations easier. Cake decorating can be learned but there are some basics you should know before you start.
It can be started up as a hobby, in fact it is a very popular one. Its always good to have someone at home who can decorate cakes well. Then there are professionals cake decorators who take up cake decoration as their business. But decorations change with time. What is in trend now may be out of it a year from now, so you have to be up to date with the current and upcoming trends. Trends can affect the styles, the colors, shapes and sizes of cakes for different occasions. With knowledge and experience you can make beautiful cakes some of which are quite complex to make.