China
You Jim and Pru r the experts on here, never gonna argue with what u say :-)
Sounds like its all the same science, trying to see the shape of the skull, if u think of it your eyebrows mirror the skull underneath, they only move up or down other things can stretch, shrink or get fat, but definitely recommend turning the photo upside down.
btw I still have lots of photos which require your expert opinion on dating on this site, just haven't uploaded them yet, so look forward to your help
Christine