It's the Holiday Season!

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Across
  1. 3. A holiday celebrated on December 25th.
  2. 5. A promise to improve oneself, often made at the start of the year.
  3. 6. He delivers presents to children worldwide.
  4. 8. Songs sung during the holiday season.
  5. 9. These animals pull Santa's sleigh.
  6. 11. The big countdown ends at this time on New Year's Eve.
Down
  1. 1. Explosions of light in the sky to celebrate the New Year.
  2. 2. A plant under which people kiss during the holidays.
  3. 4. A type of cookie often shaped like a man or house.
  4. 7. A circular decoration made of evergreen branches.
  5. 8. A festive drink often associated with New Year's toasts.
  6. 10. A small helper at Santa's workshop.