What do the professionals and real artists use when setting up characters in Blender?
I have just begun the path of making my own characters, currently opting for the 1/8 method.
Besides reference images, I want to approach this “mathematically.”
Here is what I have made so far for technical reference images.
It has nothing to do with blender. It just depends on what you are doing. If you are doing a realistic character, then yes, the 1/8 is known since antiquity Greece. But Its up to you. 1/8 is the ideal proportion, not all humans are the same and it gives them the unique touch. Here is example of cartoon character by Denzel Epelle who uses proportional tool HERE