A cool, calm and collected guide to drawing in 1, 2, 3 or more colours of ballpoint pen. Author Jennifer Mullin became an online sensation with her fresh approach to ballpoint art and she now offers online tutorials to her growing fan club. AUTHOR: Jennifer Mullin is a mixed media artist, illustrator, and art instructor based in Wisconsin, USA. She's a painter turned ballpoint pen artist as she fell in love with the ultimate portability of a sketchbook and a pen. In 2016, her sketchbook drawings went viral on Pinterest and she was inundated with requests from people interested in learning her abstract ballpoint technique.