Making a cake isn't easy. I'm just talking about making the cake without any decorating. You think it's easy, since all the instructions are on the box, but then it ends up coming out dry or just plain awful. It's a science. I once heard a friend say, "I love baking because you just do whatever." This same person also thought that baby eagles broke their beaks off to regrow new ones. The point is, baking is tough, and you probably suck at it even though everyone tells you that your cake is fantastic.
The next hard step is decorating. Obviously this one isn't very easy. Even doing the writing in the icing is difficult. Now, compare that to trying to make your cake look like the face of a beautiful cartoon character. That's a sure way to set yourself up for failure.