Double interlaced running stitch creates an attractive line of waves.
First work two rows of running stitch. Lace or thread the stitches with a contrasting colour or weight thread. You can also thread a fine ribbon through the running stitch foundation.
Use a tapestry needle to avoid splitting the foundation running stitch. With this stitch, take care to lace and not to pick up any of the fabric.
This stitch makes a good crazy patchwork stitch particularly in combination with other stitches. A bead, detached chain stitch or a French knot can be placed between each wave.
There are many varieties of running stitch. You will find a few here: Running Stitch, Interlaced Running Stitch, Interlaced Double Running Stitch No 1, Interlaced Double Running Stitch No 2, Interlaced Double Running Stitch No 3, Stepped Threaded Running Stitch (version 1), Stepped Threaded Running Stitch (version 2), Threaded Running Stitch, Whipped Running Stitch