Well explained, clearly. But, I have dyslexia problems, so I have difficulties to translate the correct position if the character is in front of me in the mirror. We must reproduce in reverse. If the positions were shown, as if we were behind the character (like in a real way) it would have been easier to orient themselves in space. The photographer has focused on beauty rather than pedagogy. They all do that. Too bad! Reading this book is not a real course, but ... it helps to supplement.