What you need:
A piece of cardboard, some old newspaper, a colored paper, scissors, some fabric lace, a pencil, glue.
How to do:
Draw a triangle shape on the cardboard and cut out.
Cut out a triangle shaped from the newspaper and stick on the cardboard.
Cut from your colored paper some circle shape and a star shape.
Stick the circle shapes and a star shape on your tree.
Stick the fabric lace as you can see in the picture.