Tutorial link:
https://www.wingfox.com/c/8713_424_17590
In this tutorial, the tutor will show you all the workflow to create a CG realistic portrait during 35 hours of video! He will propose you a specific approach, as it is impossible and not useful for you to have 35 hours of video to look at, so here is how that works. The tutorial is divided into chapters with audio comments and video edits where he will explain to you all the necessary things to know. Then you will be able to refer to the full Raw record video without editing to look more in-depth on how he applies the techniques. This wat that will be easier for you to follow and apply, but also give you access to any little subtle part you would like to see.