Hey there! Well, I think the topics you're showing in these gesture drawings are quite different from what you're mentioning about rendering materials. Looking at your gestures, I can see that you already have a good understanding of form. What I would suggest is reinforcing your knowledge of body construction—whether through simple forms like boxes and cylinders, or more complex forms where you begin to indicate some musculature in the torso—and studying basic anatomy so you can better represent muscle forms within your gestures. As for rendering materials: This may sound overly simple, but you need to study specific materials individually. In my opinion, one of the best ways to do that, aside from studying photographs, is to paint a simple sphere or box using the material or texture you see in the reference. Start by analyzing the material itself. How smooth or rough is it? Is it glossy or matte? Does it reflect light sharply or diffusely? And so on. Studying these elements separately will help you develop a much deeper understanding of each topic, making it much easier to combine that knowledge later in a finished piece. Hope this helps! | Artwod Feedback