Hatching for Thickness: By hatching (drawing closely spaced parallel lines) in particular places, you could generate the illusion of a thicker line and add texture on your drawing. Developing stunning pen and ink drawings is easy – you’ll need a good pen, high quality paper, and tolerance. Drawing Circles: https://josueweimq.blogsvila.com/36306988/5-simple-techniques-for-ink-drawing-for-beginners