Kimono users who created nice variations of heko-obi knots
Katabasami style musubi with a twist, Blogger Hasunoya gets creative
The first 8 steps are the same as the Kata-basami knot, please feel free to explore that page if you have trouble with first part of this knot.
Now comes the twist
The original Japanese page where these images came from can be found at Hasunoya blog