I used Mark's drawing method to do a painting of a horse and it worked great! Better than any other method I have tried to use.
I drew two reference lineson my reference photo, one vertical amd the other horizontal, and lined them up on a couple of outermost features. In this case, the vertical line was at the front of the leading hoof, and the horizontal line was at the point where two hooves touched the ground. I then used a proportional divider to measure and enlarge key points on the horses and then just connected the dots!
No calculations or inch measurements. The proportional dividers work like a story stick does for cabinetmaking.
I can see that it would be a tad more difficult to take the measurements from a "live" subject than from a photo, but it is still orders of magnitude better than other techniques!
thank you Mark!