Step 1.  Lower your oven racks to the bottom, and second from the bottom rungs.  Place a large sheet of tin foil on the second to bottom rack to shield the cookies from the heating element so they don't brown too much.  Preheat oven to 200 degrees F and cover a large cookie sheet with parchment paper.

Step 2.  In a large bowl, combine egg whites, salt and cream of tartar.

Step 3.  Whip the egg whites with an electric mixer until soft peaks form.

Step 4.  Slowly, add powdered sweetener to the egg whites, one tablespoon at a time, while continuing to whip with the electric mixer.  Whip until sweetener is fully incorporated and the mixture is glossy.

Step 5.  Add almond extract and food coloring and whip for 30 seconds more.

Step 6.  Add the mixture to a pastry bag with a large star tip.

Step 7.  Pipe the mixture onto the prepared cookie sheet in a 1 inch spiral.  Continue piping in a circular upward motion until it forms a conical tree shape.

Step 8.  Sprinkle edible glitter stars on top.

Step 9.  Put the cookie sheet on the bottom rack off the oven, below the tin foil.

Step 10.  Bake for 1 hour at 200 degrees F.

Step 11.  Keep the oven door closed, but turn off the heat.  Allow the cookies to dry in the oven for 1 hour more.

Step 12.  Check that the cookies are firm and dry before carefully removing them from the parchment paper with a pancake turner.