Everything stems from the extension of the sketch, while keeping close to the starting point, not to go too far. Otherwise I may not be able to complete a single painting. As for the material, it is a matter of being logical. Here are my basic tools:
A piece of paper, a pencil, a charcoal pen, and a few fingers are enough. If necessary, add a small amount of colored pencils .
It is a beginning, and it ends there.