My first cake experiences

So for fun I tried making some birthday cakes for my kids. Who wants to pay $24 for a grocery store birthday cake thats probably been sitting in the cooler for days? I can do this I tell myself. My 11 year old decides she wants High School Musical...really...how hard could it be? I began with a white cake, made a few red squares on it, added some musical notes on a bar, added the letters H, S, M on it and walah! A high school musical cake! Pretty impressive I must say...