The good luck knot (吉祥結), a name coined by Lydia Chen who wrote the seminal book Chinese Knotting in both Chinese and English, is based on the crown knot. Usually the crown knot is tied in sequence to create a sinnet, a braid composed of knots. The best static (not animated) instructions I have found on the net for the crown sinnets are by The Boondoggle Man who, unfortunately, calls them the square stitch and the circle stitch.