To be honest, for this one there is no sketch. As David Austin mentions, I do a lot of rework when I am designing. I have an idea in my head of how I want it to look. Then I try to come up with weaves that might give me the look I am looking for. Then I put it together and see if it matches the picture in my head. If not, I change what I can until I am satisfied. I could not efficiently order the number of rings and sizes for a new design.
I would also suggest making notes on your design to easily make another one or let people know how you made it.
If you have other questions, feel free to ask.
