Blue Eyes vs Chaos Mage Chibis

My brother is a HUGE Yugioh fan and wanted me to draw the Blue Eyes Ultimate Dragon and the Magician of Black Chaos on his birthday cake. I drew this up, colored in Adobe Photo Deluxe, and took a file to the local supermarket bakery where they printed it out on edible ink and paper and transferred it onto the cake.
I've heard that you can actually order the edible ink and film and use in right in your home computer printer! I really want to try that one day... then I can make delicious yaoi cakes. XD XD