Dorian Iten is a fantastic artist and a devoted educator. His classical atelier-style approach to life and cast drawing places a lot of emphasis on accuracy. To help students learn to draw better from life, Dorian has developed a few tricks for testing and improving one’s visual acuity. Check out this brief 3 step process below, and then give it a shot yourself. It’s harder than it looks!
[youtube https://www.youtube.com/watch?v=HMX3K3YMbd8]
[youtube https://www.youtube.com/watch?v=ecJO1LnjXpA]
[youtube https://www.youtube.com/watch?v=LPywXVsRKT0]
And be sure to check out Dorian’s site, where he has some really fantastic process and tutorials:
http://www.dorian-iten.com/articles/
Like ‘How to make a Value Study’: http://www.dorian-iten.com/value-study/
I always found the Reilly system is more about construction then training for accuracy. What you're expressing is more inline with what I relate towards in finding correlative measurements and angles:
https://youtu.be/rf9LrwBEfGQ
Dorian Iten's website like a treasury, thanks for sharing!
have you read about Maria Montessori? It is a famous educator!