Circular designs are made use of to generate different intensities of shadows within a pen and ink drawing. The designs enable develop lighter shadows that development into darker kinds or vice versa. This system is used to make the drawing much more pure and aids create textures like scales https://how-to-draw-with-ink-pens66543.blog-gold.com/45334495/the-definitive-guide-to-how-to-draw-with-ink-pens