There is a history within Japan’s doujin culture that is believed to be the origin of the term “skeb,” which is used on commission sites. “Skeb” is short for “sketchbook,” and there is a custom at doujin events like Comic Market where participants bring their own sketchbooks, visit the booths of their favorite artists, and—with the artist’s permission—make a simple request to have a drawing created for them. This is generally done for free, though some artists do not accept skeb requests at all, while others only accept them from customers who have purchased their merchandise. Skeb has traditionally been a gesture of goodwill on the part of the artists. I believe that skeb is a platform that makes this tradition easily accessible online. While it is not free, the rules themselves remain the same as the original practice. There are likely many people who are unfamiliar with Japanese doujin culture, and there may be aspects you don’t fully understand, but I hope you’ll enjoy it nonetheless.