Here's a printable template that provides what you want (I think):Does anyone have a printable picture of the "Arrow"?
I f one were to draw a GB around the arrow, could one see where to line up the edges of the CB and GB overlap on the OB?
Some people also like the Cranfield Arrow.
This and other useful templates and diagrams are available here:
I also have lots of info (illustrations, videos, and articles) concerning the ghost-ball aiming approach here:
Regards,
Dave