These photography backdrop clamps are super easy to use. First, stretch the elastic rope to the desired length according to your backdrop size. Then, open the clip and attach it firmly to the muslin backdrop. The Velcro can help you adjust and fix the position. When using, make sure not to over - stretch the elastic rope to avoid damage. Also, be careful when opening and closing the clips to prevent your fingers from getting pinched. For maintenance, keep them in a dry place when not in use. If they get dirty, you can wipe them with a clean, dry cloth.