"Ruby Ellen demonstrates an awesome one-line drawing technique in this video, which results in cool, abstract portraits. " Learn How to Make a One Line Drawing
I used to do that with Windows Paint. Similar to doodling. Draw a squiggly closed line. Then fill in colors with the spray can. Really abstract.
A Guide to Line Art: History, Techniques, and How to Improve "You might be surprised at how freeing this ancient art form is, and how it can contribute to your creative growth — no matter what stage you’re at in your creative abilities or career." "For an art methodology as seemingly simplistic as line art drawing, it can still feel overwhelming to figure out when, where, and how to start." "Truly, the key to improving your line art drawing abilities is to just go for it — make no apology for a mis-stroke and put all creative doubts on mute.“I have never met someone who cannot draw. I have met a lot of people who think that they cannot draw, but I assure you that is not the case." "If line drawing scares you, start with a stack of inexpensive paper — even printer paper — and a black crayon or ball point pen,” says Dixon." (MORE) Artwork from Kate Bingaman-Burt (source).