How did I deal with… exercising digital painting based on values

Visit the original article here: https://www.3dartviz.com/skills/skills-2d/digital-painting-technique-for-concept.html#exercises
Exercising digital painting this way, saves me time planning and executing concept artwork, combining layers as compositing nodes and analog drawings, filling in the gaps by hand. I can decide every time what degree of deconstruction I should I apply for any specific situation. Here you can see one exercise: