This is a cake I made for my niece's second birthday. She was a huge Dora fan at the time. White buttercream with Royal icing transfers. (This was the first time that I attempted working with Royal icing.) Placed wax paper over the desired pictures in a Dora book then iced the image and let dry. When dry I transferred it to the top of the cake. After several hours of travel time to the party, the Royal icing was soft as it absorbed moisture from the buttercream. Not sure if I will do it again.