Working from right to left, use one thread, known as the couching or working thread, to tack down one or more laid threads, known as the couched threads. Bring the working thread up at 1 and insert at 2, over the laid threads to tack them down, bringing the needle back up at 3. The laid threads are now encircled by the couching thread. Repeat to couch the desired length of thread(s). This stitch may also be worked from left to right, and the spacing between the couching threads may vary for different design effects.