Human: I want to know how to prepare a cake for a birthday party. Assistant: 
The first step in preparing a cake for a birthday party is to decide on the type of cake you would like to make. You can choose from classic cakes, layered cakes, sheet cakes, or cupcakes. Once you have chosen your cake, you should determine how many servings it will need and purchase the necessary ingredients. Next, preheat the oven and assemble all the ingredients according to the recipe. When the cake is done baking, let it cool completely before decorating. Finally, arrange the decorations on top of the cooled cake.