When you’re using prepackaged or commercial quality pens that have their particular ink, change them out when you'll want to transform how thick or dim your lines are. As soon as you ink the picture, go around key strains a 2nd or 3rd time to thicken and clean them out. https://collingnsxa.angelinsblog.com/35763449/an-unbiased-view-of-ink-pen-drawing-techniques