What the hell is a 'squinch'?  

I posted a video of Peter Hurley talking about the 'squinch' some time back.  You can see it here: https://photo-photo.com/peter-hurley-and-the-squinch/

I recently came across some updated information by him on this.  He shows some comparison photos of people with relaxed eyes and slightly 'squinched' eyes.   Using this, whether it be for actors headshots, or family photos, this techniques will make your subject look much more natural.

It is a really excellent video; watch it below: