I decided to try this type of knot with leather cord so used 1.5mm soft green lether and put one of my focal beads with it this time. The focal has silver wound around it so I used more silver to hang small spacer beads in the same green as the focal.
Here's a close up of the focal,
I found it much easier to get the knotting more regular than the rattail used in the earlier purple one. If anyone wants to have a go, I'd recommend getting a book from the Library, either on Macrame or Ornamental knotting. A simpler knot to start is the square knot and if you Google "How to make a square knot" lots of You tube videos come up on the search.