Book excerpt: Bestselling author Christopher Hart helps artists master the fundamentals of drawing natural-looking figures. Eschewing esoteric "art poses," he portrays real-life gestures, such as standing, sitting, kneeling, and reclining, with arms folded, ankles crossed, hands on hips, and more, all shown from various angles. Hart also explores deeper concepts such as perspective, depth, shadows, and foreshortening, and provides step-by-step tutorials throughout.