4. Now, prepare the butter-cream icing. You can use your favorite ingredients or you can also use 1 cup butter, 1 cup shortening, 2 teaspoon salt, 6 tablespoons milk, 2 bags powdered sugar, 2 cups almond, and some vanilla extract.
5. Mix together the blue and green icing and set it aside.
6. After the cakes have completely cooled, frost them with butter-cream.