1. Mix troughly until you have a mixture that resembles like sand.2. Using a plastic mold pack the sugar into the mold really well and level it. Un mold carefully placing a piece of tick cardboard behind the mold, flip and remove the plastic mold carefully. Place cardboard on top of a baking tray and Bake for at least 1 hour on 200F/90C. Remove from oven carefully. Leave  tray on a safe place and let them air dry for an extra day.3. Proceed and decorate with royal Icing and a little black coloring or melted dark chocolate.This sugar skulls are not meant to be eaten, it is just for decoration since they will just taste like plain sugar…But you are welcome to eat them if you have a strong sugar tooth, have fun!You can buy this awesome Guadalupe Posadas Skull Molds and many more on the following link: Mexican Sugar Skulls