I use two methods for hanging wall hangings. If they're small enough I just fold two squares in half on the diagonal and sew one into each top corner when I put the binding on. I make a tube if the wall hanging is bigger than about 18 inches across. To make the tube I cut my fabric at least 7 inches wide by the length of the wall hanging. I hem each end by folding it over half an inch twice. I fold the tube in half lengthwise and line up the raw edges with the top when I sew the binding on and then hand stitch down the free edges when I do the binding.