It is important to build your business on a strong foundation.  All businesses need binding agreements with agreed upon terms to govern client relationships and business transactions.  If you are in business as a photographer (i.e. people are paying you in exchange for photography services), then there are issues that need to be addressed and agreed upon prior to engaging in a transaction.  This is to protect you and your business. There are also a number of liability concerns involved in providing professional photography services that should be agreed upon in a written agreement prior to providing said services.  Again, this is to protect you and your business. It also appears more professional.  In a growing sea of professional photographers, using well-written and pertinent legal forms will set you apart from the crowd.