Sean has become one of the most popular and highly sought after instructors. Born in Brooklyn, New York, Sean Crosby began to explore his artistic talents at a young age. He developed a keen sense of observation, recognizing that geometry was the key to accurately reproducing drawings and paintings. During his summer breaks in highschool Sean took weekend classes at Parsons School of Design and the School of Visual Arts in New York City, studing commercial illustration. When he began studing watercolor he was mesmerized by the incredible results he could achieve by layering glazed colors over a white background. He later realized this technique would play a key role in his future paintings.

After highschool Sean became a member of the International Brotherhood of Painter's and Allied Trades Union in New York City. During his third year of apprenticeship as a residential and commercial paperhanger and painter, he noticed an old-timer, Howie Zucker, decorating a metal fire door using faux graining techniques. Intrigued by Howie's work Sean decided to shift his career towards decorative painting and opened a side business offering faux finishes.

Around 1995, Sean's side business was successful and growing, so he decided it was time to leave his job with the housing authority to pursue his true passion as a professional decorator. Sean took some classes on decorative painting and began intensely studying books by accomplished decorators such as Yannick Guegan and Pierre Finkelstein to discover how they rendered such incredible finishes. In 1996, Sean instructed his first mural class, incorporating the tried and proven theories he had used since his childhood (geometry, value and horizontal & vertical lines), as he felt it was the best way to teach beginners. Based on the success of the class, more class dates were scheduled and Sean began to teach classes on graining, marbling, trompe l'oeil, and began to create new panels for future mural workshops.

Sean has become a highly sought after instructor, and was invited to teach Faux Fresco at Vigini Studios in Texas, graining & marbling at Faux Effects Studios in Florida, and several other decorative courses at schools throughout the United States. In 2003, Sean was invited to teach mural at the IPEDEC. This was an incredible honor, as no other American had been extended an invitation to teach mural at the IPEDEC's "long class" before. He has since been invited back to the IPEDEC in 2004 and 2005. In 2006, Sean taught mural and portraiture at Nadai-Verdon studios on Penne D'Agenais, France.

Some recent projects include a series of religious-themed faux frescoes for St. Joseph's Catholic Church in Macon, Georgia as well as reproductions of Italian renaissance frescoes and murals (originally rendered by such masters as Massacio, Masolino, Michelangelo, Titian, Veronese and Romano) for exclusive private clientele in the Northeastern United States.