1. Collapse the stuffing at the hand socket, push the skin forward with the index finger of the left hand, and press down the folds pushed out by the left hand with the index finger of the right thumb, and repeat this action.

2. The pinched pleats are even and the length is appropriate.

3. When closing, lift one wrinkle at a time, so that the lines will not be messy.

4. The second lap is closed in the same way. In the same way, the pleats are pulled up one by one, and the loops are narrowed and squeezed directly. Such a pleated bag is finished.

5. Finished product drawing.