1, set a good center fold line and do a double-lock knot, leaving the center of 1 cm when the buckle.
2, from just doing a good job of double-lock knot 8 cm distant location, do a double-lock knot.
3, do the second step at a distance of 3 cm of the double-lock knot position to do two consecutive double-lock knot. Wearing a bead, do two consecutive double-lock knot.
4, repeat steps 3, Zaichuan a bead, playing a button knot.