It really is the best way to make binding for all quilts, even if you don't have curves in your binding. In watching Jenny's video though I see that when she cut the fabric at the beginning she didn't use the triangular piece that she cut off. I learned to start with a piece of fabric and mark 2 opposite ends each with a pin. Then, fold up your triangle at one of the pinned ends and cut. You then sew that piece back on over the opposite side (right sides together) before marking you bias strips and sewing the tube. That way you get even more bias binding and don't waste the first triangular cut piece.