What you need:
A piece of cardboard, old newspaper, some colored paper, some fabric lace, scissors, glue.
How to do:
Cut a triangle shape from the cardboard.
Stick a triangle shaped newspaper on the cardboard.
Cut pieces of colored paper and stick on the triangle shape making lines.
Cut a star shape form your colored paper and stick on your tree as you can see in the picture.
Cut a piece of fabric lace and stick on the Christmas tree.