Material preparation: cardboard, scissors, needle and thread, double-sided tape, disposable chopsticks, etc.

Operating steps:

1. Turn the prepared cardboard over and fold it neatly with the origami on the other side. Otherwise, it will affect the overall beauty. Prepare several pieces of cardboard with different colors and put them aside for later use, as shown in the figure.

2. Cut it with scissors according to the steps in the picture. Scissors should be spaced at the same distance and operated step by step. Otherwise, the final product will be unsightly and fail to achieve the desired effect, as shown in the figure.

3. Then, the next operation is to roll the card paper with the same spacing just cut with scissors several times to make it look curved, so that the next operation can be better. Open the folded cardboard, stick double-sided tape on one cardboard (where the scissors didn't cut it in the last step) and stick it on the other cardboard, as shown in the figure.