These 3D sketches are part of a series I did for my contribution to the book "The Artist's Guide to the Anatomy of the Human Head" - Overall a very interesting project to practice human expression, but also with a bit of room to play with proportions as this was in the 'Stylisation' chapter.
The link to the book is here: https://shop.3dtotal.com/anatomy-of-the-human-head.html