Bake, cool..... and start decorating! You will need the thicker black icing for outlining the skull. I used the tip number 3, for a thick line.Let them dry for about one hour.
Then with the thinner white icing flood inside and let them dry overnight.
Outline and flood the muffin pan.
Now you could made the black eyes and the nose. Immediatly pipe a small white dot on the eyes.
For me the halloween colors are black, violet, orange and green. Let them dry again.