Whip the egg whites till they form peaks

Gradually add the sugar into the stiff egg whites.

Remove a good half cup of the mixture and reserve to a bowl. This will be the topping that you brush onto the cookie.

Add the ground almonds, lemon zest, cinnamon and blend.

Form into a dough.

Sift some flour and sugar onto the work table.

Roll out the dough to about 1/4 inch thickness.

First loosen the dough if it is stuck to the board and
put onto a freshly sifted area to prevent sticking.

Cut out stars with a star cookie cutter.

Brush stars with the egg white mixture. this can take
a bit of practice to get right. Lift the stars carefully
onto a sprayed cookie sheet or lined with parchment
or a silpat.

Pre heat oven to 325 degrees

It can be difficult to spread on the icing and make it look good without going over the edges.
I first thought it would work better to put on the icing and then cut the star out.
That didn't seem to work for me, so I found it easier to do spread it on the individual stars.