That method cuts the circulation to my feet off. I adapted a method I use for packing parachutes. I use a spring clamp and adjustable bungee cord. Clamp the fabric several inches below where you'll be sewing. Attach one end of the bungee cord to the clamp and the other to the table. Adjust the length of the bungee cord so that when you pull the fabric tight with your left hand the spot where you're sewing will be right in front of you. As you progress with your stitching, move the clamp up with your progress if necessary. I tried using a clamp and bungee cord at each end in order to eliminate having to pull the fabric tight but this didn't work as well as I thought it would. The only down side to this method is that it is hard to bend the fabric as you would over your knee. I have to use the straight in and straight out method with the needle rather than bending the fabric and going in at an angle. It takes longer to do it this way but it made it possible for me to comfortably sew accurate pleats.