Peel your boiled eggs and cut them in half lengthwise.

Put all the egg  yolks in a small mixing bowl

Add mayonnaise, mustard, and salt and pepper to yolks and mix until well incorporated.

Add a few drops of blue and green food coloring to create the green wreath color.

Whip your egg mixture with a fork until there are no more lumps. 

Using a large star tip and a piping bag, load your piping bag with your green yolk mixture.

Pipe the yolk mixture into the middle of the white part of your boiled egg. 

Add 3 little squares of red pepper at the top of each egg to create a holly wreath look.