They use these photos as a screening tool so be sure to send good, clear, properly exposed, properly composed photographs in which you are properly positioned. If there is an opening for someone with your look, the agency will be interested in meeting with you in person to see if, in fact, you look like your picture. This does not necessarily mean that you have or do not have what it takes to be a model. It just gets you an interview and maybe on to a test shoot.
Most would-be models send bad pictures, or they may look great but they don't meet the agency's needs at that moment, or the agent guessed wrong. Modeling agencies say, "Don't spend money on getting photos taken; a Polaroid by your friend is just fine." But when they talk about sending in a simple snapshot, what they are really looking for is at least an advanced amateur level of photography or a would-be professional photographer level. Please be cautious when using a beginner for your photographer, many beginners have problems with exposure, focus, and composition, let alone knowing how to position models for their best look. You may not want to trust your career to your best friend's ability as a photographer unless they meet the advanced amateur criteria.
Try sending your photos to several modeling agencies to see if they are interested in you. Agencies are always conscious of what look is in at the moment, and they may be in need of brunettes this season and currently have a roster full of blondes. It can be as simple as being in the right place at the right time. For example, one agency or photographer may tell a would-be model that he or she doesn't have what it takes; that wannabe model then goes to another agency and becomes a star model
The initial snapshot, interview, and test shot are just screening processes to find those who would have an easier time in modeling. A special few may still find some measure of success in modeling by hard work and developing special talents. They may not become superstars but they can find enjoyment and financial rewards pursuing a modeling career.
However you decide to submit your photos be sure to provide your contact information and stats!
