To begin, I blow out the insides of the egg using a syringe. (You can also blow them out with your mouth.) Next, the emptied shells soak in a bleach bath (~2 tablespoons of household bleach/1 pint of water) for half an hour. Then, after they are rinsed well in water, they soak in a baking soda bath (~2 tablespoons of baking soda dissolved in 1 pint of water) to neutralize the bleach. One last water bath, and they are put aside to dry.
I use an egg lathe to mark guidelines on the shell.
Using the guidelines, I add preliminary sketches of my design.
I use the Proxxon Engraver and different size burrs to pierce a series of holes in the egg shells to complete the design.
When I'm finished with the piercing, I buff the shells with a thin coat of coconut or olive oil. Jewelry findings are added for displaying the completed eggs.
Give it a try!! It's not as hard as you think, and you'll get impressive results.