I worked on a copy of a Degas Sketch. It is okay but it is part of the process. Everything is an experiment and you need to do a lot of things to get better so this experiment is just that another experiment.
This is a copy of a Leonardo Da Vinci sketch of a study he did for a battle painting he never completed. It doesn't matter that he never did the painting as the prep sketches are excellent. This is an experiment and I am no where close to Da Vinci, but I like to practice after a Master to improve my skills. This is done in pencil.