The anatomy lesson of Dr Nicolaes Tulp, by Rembrandt van Rijn
Rembrandt von Rijn – The Anatomy Lesson of Dr. Nicolaes Tulp

What if you’re practicing wrong? Then you get very good at doing something wrong.

George Leonard in his book ‘Mastery’

Therefore it is a good idea to learn from someone who is better at this skill than we are. Especially when trying to learn a skill in areas that work with categories like right and wrong, for example perspective or anatomy.

Later, these rules can then be consciously broken by stylistic decisions, out of which a style can evolve over time. 

Errors that we do not even understand should not be called a style.