As I commented on 30min warmup Discord´s group:
For starters I do think Asaro´s head planes are too subtle/intricated; but I can see it´s value to try understand it´s planes so you can start seeing on people´s faces.
You can find a nice 3D representation of the Asaro´s head online:
Holding ALT + Right Mouse click on the Sketchfab interface you can move the lights; even more superior than CSP realtime render.
If you use Clip Studio Paint you can easilly load the OBJ 3D file on the program, rotate and move the light around - even add some 'post processing effects ' like Binarization, Levels Adjustments eg; here´s a screenshot:
Philippe Faraut casts are beautifull done:
Feels a bit harsh/stylized though...
"...The more easy and cheap it is to use those Digital Tools, they´re not practical and removes a lot of the tactile feeling / real world lightning conditions experience of using a physical cast...."
But we can´t deny the usefulness of such tool.