My method: directly put one side of elastic belt and the top edge of the waist up to car (divided into several sections), and then wrap elastic belt inside and car neatly. I have done this method for more than ten times, especially for thin materials, and the finished products look good; Thick cloth (thick striped velvet) is turned around first and then put in; For the other waist, the elastic band and the elastic band opening are respectively wound into loops, with the elastic band opening outside and the elastic band inside, and put on the car together with the belt opening. The third method is the best. I like the first method, because it is waist joint and the waist head is the material of pants.