Well one of my other hobbies. I am learning to draw in the classical style of the 19th century. This is my first "finished" drawing. Ideally I would have spent a lot more time on it, but there was a limit to how many days the model was going to sit for us.
I used carbon pencil on heavy watercolor paper. It is a meticulous process that includes the use of a knitting needle held at arms length to measure proportions and transfer them to the paper. But it some sense it is a simple and systematic method that anyone could learn.