As of right now, the painting looks like this:
I saw an article today that said there were natural reasons why people do not recognize other people outside their ethnic group very well.
I think it actually works even on the family level. People in a particular family filter out the traits they all have in common and notice only the differences. But people from outside the family will think relatives all tend to look the same,
Nevertheless, when I look at the photo of the Liberian chimpanzees, I see individuals who all look very different from each other. I hope that comes through in my painting. They are all going through the same experience, but each is reacting to it in a completely different way, and each face is different.
I am not an accurate painter, but I do focus on the personality and the special features of my subjects. No two are the same. It's what I believe.