Airbrush painting is an art like any other, requiring talent and skill; but it is also a technology that, more than other art forms, calls for technical mastery of equipment used in the process. JoAnn Bortles, one of the top airbrush artists in the United States, has developed a teaching curriculum for mastering both the technology and techniques needed to be a successful airbrush artist-an approach that frees her students to develop their own airbrush...