What you need:
1. Colored paper
1) Cut all the needed details out of colored paper as shown in the picture.
2) Draw thin lines on the colored rectangles.
3) Cut the stripes.
4) Make some of the stripes shorter. You can see it on the picture.
5) Next cut a black square and a yellow star out.
6) Glue all the details on the sheet of paper.
Your christmas tree is done!