In the pinch, I would do that with saliva and my finger! Softer tones alongside ink strains create a great contrast and can make your drawings a little more lifelike. With this in mind, I hope you enjoy drawing with pen & ink and that these tips can assist https://how-to-draw-with-ink-pens16813.blogolize.com/the-smart-trick-of-ink-pen-drawing-techniques-that-no-one-is-discussing-75973070