Working from the right side of the garment, place the pieces to be seamed on a flat surface, right sides up. Begin at the lower edge and work upward, row by row. Insert a threaded tapestry needle under the horizontal bar in the middle of the edge stitch on one side of the seam, and then under the corresponding bar on the opposite side. Continue alternating from side to side, pulling the yarn in the direction of the seam, not outward toward your body, to prevent the bars from stretching to the front. When the seam is complete, weave the tail end down through the seam allowance for 2" (5 cm).