For the best part of a decade, South African artist Nelson Makamo has had a deal with his 11 year-old cousin, Mapule Maoto. He pays for her studies, and she agrees to model for his colorful paintings. Today, with fans all over the world praising his work, including the likes of Oprah Winfrey, it’s turned out to be a pretty good deal. The latest painting that Mapule has inspired is Makamo’s cover for TIME’s 2019 Optimists issue, guest edited by filmmaker Ava DuVernay.