After working with all known Graffiti techniques and even discovering some new areas of application, Joy published a practise book for Graffiti as an art-form, design and decoration in 2005 with the „Knaur Ratgeber Verlag“. As the only german practise book on graffiti, it quickly became a definitive book and Joy started to teach Graffiti in neighbourhoods, creativity seminars, at schools and adult education centers.
This stage in Joy´s Graffiti activities led to new techniques and cross-cultural combinations, enriching the spectrum of his artistic vocabulary for 2-dimensional artwork as well as for design applications and street-art happenings.