http://www.domestika.org/en/courses/468-digital-design-and-illustration-of-tattoos-with-procreate

In a very short time, Procreate has become the essential tool for digital illustration in tablets, because of its intuitive interface and the variety of resources and artistic styles with which it can be experimented. One of the disciplines that have been revolutionized by the irruption of Procreate is the design of tattoos. Tania Maia, a Brazilian tattoo artist based in Peru and participant on three occasions at the NY Empire State Tattoo Expo, incorporates her iPad with Procreate in the process of creating her designs, something that has simplified her life and allows her to obtain more precision and flexibility in their designs.