These cookies look luminous when hung where the light can sparkle through them. Avoid making them on a humid or rainy day to ensure that the sugar centers harden properly.
Using smaller cookie cutters, cut a window from each shape. Use a metal spatula to transfer the cookies to the prepared sheets, spacing them 1 inch (2.5 cm) apart. Press the dough scraps together, roll out, and cut out additional shapes. Use a skewer or drinking straw to cut a small hole in the top of each cookie if yo