Cut a 2.5 cm wide strip from the short end of A4 sized colored paper.

Cut different colors of paper into the same paper strips to get red, orange, yellow, green, blue and purple paper strips.

Trim each color in the order shown above so that it is about 3 cm shorter than the previous color.

Fold these bills one by one in rainbow order. Align one end of the strap to one side, and then fix all 6 straps.

Align the other end of each ribbon from the shortest end.

Then nail these strips together.

The bound paper should arch like a rainbow.

Play cotton balls. If the cotton ball is not easy to open, you can make a small incision on one side of the cotton ball with scissors.

Then spread out into a cloud.

Put one end of the rainbow in the middle of the cotton ball. Then fold both sides of the cotton ball in half and tie it to the rainbow to fix it in place.

Repeat the above steps for the cotton balls on the other side of the rainbow, and our handmade rainbow will be completed!