How to change appearance in Nioh 3

Puzzling out how to change appearance in Nioh 3 is likely one of the first things you'll wonder how to do, especially if, in typical Soulslike fashion, you either regret the monstrosity you've created, or they somehow don't look anything like they did in the character creator. I swear, I spend 30 minutes designing a character and someone completely different wanders out.

Since Nioh 3 has a character code system, you can share your character creations with others, or yoink the very pretty...