1In large bowl, mix 1 1/2 cups powdered sugar, the butter, 1 teaspoon vanilla, almond extract and egg until well blended. Stir in flour, baking soda and cream of tartar. Cover and refrigerate at least 3 hours.
2Heat oven to 375°F. Divide dough in half. On lightly floured surface, roll each half of dough 3/16 inch thick. Cut into assorted shapes with cookie cutters, or cut around patterns traced from storybook illustrations. If cookies are to be hung as decorations, make a hole in each 1/4 inch from top with end of plastic straw. Place on ungreased cookie sheet.
3Bake 7 to 8 minutes or until light brown. Remove from cookie sheet to cooling rack. Cool completely, about 30 minutes.
4In medium bowl, beat all frosting ingredients until smooth and spreadable. Tint with food color if desired. Frost and decorate cookies as desired with frosting and colored sugars.