Add water to icing a drop at a time for thinner spreading consistency. Decorate with dragée (sometimes called sugar pearls), gold or silver dust, and coarse or sparkling sugar, and tint the frosting with food color paste. All are available at coppergifts.com. Make the cookie dough up to a month in advance, wrap it tightly, and freeze. Thaw dough completely by placing it in the refrigerator overnight.