You would draw the head first, the rest of the body would aline with the head.
Back in those times, nobody had the experience or practice to make the things they painted look realistic. They didn’t really have the years of experience of people before them to go off of. Also, they probably had quite limited tools.
Answer:
On one side stood the Poussinists (Fr. Poussinistes) who were a group of French artists, named after the painter Nicolas Poussin, who believed that drawing was the most important thing. On the other side were the Rubenists (Fr. Rubénistes), named after Peter Paul Rubens, who prioritized color.