Generating clean gradients with a pen is a way which will include a sense of realism and depth for your drawings. Employing Different Pen Sizes: Experiment with unique dimensions of pen nibs for different dot sizes. Greater dots may be used for rougher textures, while finer dots are ideal https://claytongllll.jts-blog.com/36170299/the-definitive-guide-to-how-to-draw-with-ink-pens