Clara's Birthday Cake

Clara's Birthday Cake:

Clara's mom is having her birthday today and Clara decided to surprise her with a home made cake. Even though she is too young to be able to bake a cake herself, Clara can try to decorate it just as she likes it. Can you give her a hand? Just help her choose the right cake size, icing and decors. As for the cake's final look, that's totally up to your imagination...