To master painting with color and composition, start by studying color theory—understand hue, value, and saturation. Practice mixing colors and using complementary contrasts to create depth and emotion. Learn composition basics like the rule of thirds, leading lines, and balance to guide the viewer’s eye. Analyze master artworks to see how color and structure interact. Consistent practice, experimentation, and critique will sharpen your skills. Use thumbnails to plan, and always aim for harmony between color and composition in your work.