Round patterns develop light-weight and dark shadows in pen and ink drawings, with little circles making more dense shading. This technique captures pure textures, including scales or foliage. Go away this to dry a bit, and observe the two colors blend with each other, developing a cloud-like bloom form. https://inkpendrawingtechniques32062.blogars.com/36050168/a-review-of-ink-drawing-for-beginners