I used an old satin sheet, cut it into a Christmas tree pattern and sewed it together. For trunk of the tree I just used a piece of brown scrap material and pined it to the bottom of the tree.
The decoration on the Christmas tree costume was made out of red and white pieces of felt and glitter glue. I also just hung some old stockings on the tree and just wrapped some old shoe boxes in Christmas paper for the gifts under the tree. My head was the angel and I just used some silver garland to complete the project.