Start by using the blank cookie cake. This one photographed is chocolate chip.
Start by doing your border. Icing tip #21.
Add more colors to your border. Still using the #21 tip.
Write the message either in white or a lighter color icing. Using a #18 tip.
Fill in the writing and make bolder.
Final step take other color icing and use #6 tip and write on top with color.
Great Birthday gifts!