Whether you're celebrating Halloween or the Day of the Dead, it's best to break up the making of the recipe over a couple of days. On day one, make and bake the cookie dough and also make and apply the filler icing to the cooled cookies. Allow the cookies to sit out overnight, as the filler icing needs to dry for at least 8 hours. Then, on day two, add the decorations with the other icing. And just to reiterate what the author said, if you don't like decorating cookies, you don't need to do much to them. But if you do like to add an occasional flourish to your sweets, this recipe is a blank canvas just begging for you to do your magic.