Adjust the oven rack to middle position and preheat oven to 180°C. Butter a 25 cm round loose bottom ring cake tin. Mix Vanilla Cake according to box instructions and bake for 35 minutes. Turn out on a cooling rack. Rebutter the pan. Mix the Red Velvet Cake according to box instructions and bake for 30 minutes. Turn out onto a cooling rack. Allow both cakes to cool completely before icing. In separate bowls mix the Vanilla and Strawberry icings according to pack instructions. In the winter when the butter sets more, you still have to add a little more hot water.
Cut both cakes into halves and divide one of the halves into quarters. Cover a large board with baking paper and some thin netting, toile or muslin. Join the cake pieces together in the form of a snake. Connect with white icing. Shape the head and tail. Place blobs of Vanilla Icing along the length of the cake. Using a small palette knife (dipped in a mug of boiling water every so often) spread the icing along the length and down the sides of the cake. Pipe random lines of Strawberry Icing over the cake and feather them with the palette knife. Support the crown with 5 toothpicks dipped into icing. We just used a cheap pink fake pearl necklace wound around the toothpicks in a spiral shape. Use pink chocolate hearts for the eyes and a line of red write-on icing gel for the mouth. Go to town and sprinkle the cake with decorative cake pearls and pink crystals. Position birthday candles along the length of the body.