October is a month of favorites: Halloween, the annual pumpkin spice phenomenon, and Inktober. Jake Parker started the Inktober challenge in 2009 by posting his art on Instagram, and the activity...

It takes most artists hours to complete a good, detailed piece. What if they had only one day? Artists across the globe are up to the challenge. In the month-long “art-athon” called Inktober, the...