For my husband Brian's birthday this year, I decided to bake him an R2D2 cake as he is a big Star Wars fan. I had to buy the pan specifically for it. It was a lot of fun decorating the cake as it was very easy using the star tip. The only thing was it took a lot longer than I had expected - a couple of hours just to pipe in all the icing neatly. So if you ever attempt a cake this size, make sure you leave lots of time for icing!