Patterson-Gimlin Film Studied in Russia in 1970s till now
[Reprinted with Permission]
"What I always refer to in this frame is the fact that the cranium is far too small to fit a normal human head into, which would have been the case of a man wearing a suit. A man in a suit cannot have a smaller head inside the suit than when he has it off (Be careful of the green/brown color break on the back profile, too: the size of the head is even less than it seems at first)"
Here is the direct comparison. The fancier version invents a whole range of features which simply are not indicated in the original. The crown of the head is especially larger and fuller, these two versions are matched to the same size and position of the face. And there is no reason to assume a projecting nose or well-formed lips in the original.