I just read of a technique that uses bias strips and cording. Center the cording on the bias and fold the bias over the cording and use a zipper foot to stitch close to the cord. Trim the raw edges about 1/8 inch from the seam, or less. Then pull the cording out and press the piece flat. Place the bias strip so the seam line matches the placement of a side of the vine design and machine stitch on the same seamline. ( Stretch the bias a little on inside curves and relax it a bit on outside curves so it will lay flat when done.) Then go back and fold and press it over to cover the seam and raw edge. and hand or machine stitch the loose edge. (this was in a library book which I took back and I don't remember the title)