Cover with white frosting - white to symbolize His purity that covers our sins.

Decorate with a star and an angel - they symbolize the bearers of the first glad tidings.

Add 12 red candles - 12 candles symbolize that Christ is our light through the 12 months and the color red stands for his blood shed for us.

Encircle the cake with green frosting - symbolized everlasting life.