Here is an example of the bone placement.  I had to go and redo the example for you because when I went back to the setup room, while the bones were showing, the ones for the vertical circles weren't in the same place as I had placed them.  The tip seemed to have repositioned itself to the end of the horizontal ring.  Image to follow.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi