In the video you will see me attaching these waistbands to different skirts, above picture has flat skirt front and fullness in back tension while sewing is everything, basting with washaway thread for beginners can really improve the finish. You need to hold the fabric balanced back and front so it feeds through sewing machine equally and puts no stress on sewing needle. Yes it takes a bit of practice! having the elastic marked into quarters should give you an instant idea how much gathering on the waistband there is to do, excess fabric can be pleated, just remember the ONLY RULE is that the skirt has to fit over the hips Before you start to add the elastic.