Hatching for Thickness: By hatching (drawing intently spaced parallel traces) in particular places, you'll be able to make the illusion of the thicker line and add texture towards your drawing. Overlapping Strokes: Layering or overlapping traces can develop a feeling of thickness. This system is especially practical with pens https://inkdrawingforbeginners76543.wssblogs.com/35988568/not-known-facts-about-ink-pen-drawing-techniques