Diana McMahon Collis (Author) Diana McMahon Collis is a tarot consultant, co-founder of the Tarot Association of the British Isles and author of the best-selling Tattoo Tarot . Oliver Munden (Illustrator) Oliver Munden works as a tattooist at Rock Steady Tattoo on the south coast of England, UK, as well as taking on commercial artwork projects. Formerly working under the name MEGAMUNDEN, Oliver is the author of The Tattoo Colouring Book , The Tattoo Flash Colouring Book, Tattoo Tarot, The Tarot Colouring Book, and more books and gifts published by Laurence King.