To prepare the egg:
1) Use a pair of sharp scissors to poke a hole in the side of the egg.
2) Starting at the hole, cut an oval out of the side of the shell.
3) Empty the egg yolk and egg white.
4) Trim the oval a bit more if needed.
5) Rinse out the shell.
6) Leave it to dry overnight.
The finished decoration will look something like this: