I used a focal I made from scrap clay. In her original design, Lynn used size 15 seed beads but I didn't have a suitable colour in 15s to go with my focal so I decided to use size 11s. Clearly 15s would have worked better - there should have been a Chinese knot of beads above the focal but I ran out of my size 11s so I had to let that one go!
The necklace is also slightly too small and sits a little highly on my neck. As I made the effort to make it, I'll wear it for a while and then dismantle it and reuse the beads I think.
Ah well, you live you learn beadweaving tips!