Hatching for Thickness: By hatching (drawing carefully spaced parallel strains) in particular parts, you could build the illusion of a thicker line and include texture on your drawing. Brush pens give more variation in line width than a fineliner pen. Their nibs have a wide foundation that then tapers https://ink-drawing-for-beginners43210.liberty-blog.com/36243196/ink-drawing-for-beginners-no-further-a-mystery