"the sight-size method"

Working to the "sight-size" method means drawing the exact same scale and proportions as the object displayed.
I have been taught this approach by the Academy of Art of Florence. It helps me to achieve accurate proportions more easily, as well as to create a more exact visual impression of the subect on paper.
In the end, I draw what I see and not what I want to see.
In preparation, I can spend several hours trying to find the best position, the best light to give a more dramatic effect and to reveal the real  expression of my model.
For me, times does not matter !