Put it on first. If it is long, you can keep the length, make the upper one long and fold the long one down. You can decide how much to discount. Then pull one end of the right hand and tighten it to the right, and hold it with the left hand according to the waist circumference and tightness. One side of the right hand is lower than the first side, so it can be wrapped more tightly.
Then clip the end pinched by the right hand to the left. Don't clip it too deep. If it is too deep, the folds will not look good. Clamp it. If you feel unsafe, you can add a belt, but you can wear it without a belt, which is convenient for sorting at any time.