The art teacher stood in a spacious atelier, surrounded by shelves filled with meticulously organized tubes of paint and an assortment of brushes in various sizes. In front of an elegantly draped still-life arrangement, they demonstrated the art of capturing light and shadow. With a palette knife in hand, the teacher expertly mixed colors, showing the students how to achieve subtle variations and create a sense of depth. The students diligently followed suit, carefully applying layers of paint, striving to recreate the texture and luminosity of the objects before them.