Today we're talking about
coral stitch. Also called beaded stitch, German knot stitch, or snail trail, this stitch can be used singly to outline shapes, or worked in rows spaced closely together as a filling stitch, in which case you'll want to position the knots between those in the previous row. Here's how you do it:
Bring your thread to the front on the righthand side of your line and lay it along the line for a short distance, holding it in place with your thumb.