"Extremely enlightening. Loved instructor's manner and openness. I liked the ability to ask lots of questions as we covered material."
Sonia Suter
Associate Professor, George Washington University

"We have been privileged to work with the best of the best in this field. Mark Sincevich's work has a depth and quality that is outstanding. Technically and artistically.”
Carol Ann Boyd
General Manager, Dodge Color, Inc.<read more testimonials>

• ALS Association
• Bank of America
• Barnes & Noble Books
• Berkshire Mortgage Finance
• Border’s Bookstore
• Child Welfare League of America (CWLA)
• City Scape Books
• Cure Alzheimers Fund
• DC Society of Young Professionals
• Deutsche Bank
• Doubletree Hotel Nashville, TN
• EBW Group, Inc.
• Fannie Mae Foundation
• First Class, Inc.
• FOX Architects
• Franke Architects
• General Mills
• George Mason University
• Geppetto Catering
• Golden Door Spa
• Greater Washington Initiative
• Honda Motor Corporation - North America
• Iceland Air
• Manor Country Club
• Montgomery County Department of Recreation
• National Coalition for Disability Rights
• National Regional Electircal Co-operative Association (NRECA)
• National Speakers Association (NSA)
• National Speakers Association (NSA) - DC Chapter
• Reserve Officer Association (ROA)
• Ronald Reagan Building & International Trade Center
• Science Applications International (SAIC)
• Sheraton Hotel Baltimore North
• Smart CEO Magazine
• The Center for Bio-Security
• The Photographer's Gallery
• Two Left Shoes Films
• Veritas Software
• VIP Events & Catering
• Washington School of Photography (WSP)
• Washington Terrace Hotel
• Weber Business Services
• Wolf Rinke & Associates
• World Vision