Loving the course so far, even though it's definitely going to be challenging for a beginner like myself. There is something I don't understand. Perhaps I am falling into the trap of asking "what part is this", which you repeatedly have warned against :) But nonetheless.. I have attached a screenshot of the construction of the second pose; I am confused about the line that you describe as representing the thoracic spine. I just cannot relate the line you drew to the spine of the model, which from our viewing angle would seem to me to be nearly straight, certainly nowhere near as bent as you drew it. I am similarly puzzled by the line representing the spine in the other two poses, though it's not quite as pronounced as here, so I am definitely missing something. Either I am just completely wrong about where her spine would be, or I am misunderstanding what this line represents. Could you elaborate a bit? Thank you!