Draw constructions in shadows with thicker traces, and constructions in light-weight with thinner strains. Try it your self: draw a circle, then go above the bottom of it with a heavier line and right away it gains volume and looks like a ball. Overlapping Strokes: Layering or overlapping lines https://andyapzfl.ziblogs.com/37176455/details-fiction-and-ink-drawing-for-beginners