Knead in about one cup additional flour or as much as you need until dough is no longer sticky and is easy to handle. Put into a plastic bag and refrigerate until chilled and stiff. Then you are ready to roll out and cut the cookies. Cut off a manageable piece and keep the rest cool until you are ready for more. For many little cut-out shapes, roll out the dough thinly.
Thin cookies are tastiest.
Cut out cookie paper pattern. Place on greased baking sheet. Use scrappy bits of dough to decorate your Nicholas. For a beard press a little dough through a sieve or a garlic press. Use little balls of dough for eyes or buttons.