The most common and well-known service forensic artists provide are composite sketches. Composite drawing uses descriptions given by witnesses to create a drawing that is a useful tool for identifying or eliminating a suspect saving time and money pursuing alibis, conducting interrogations, etc.. A composite drawing is not intended to be a portrait of an individual, but more of a two-dimensional likeness that is a visual record of the witness’ recollections.

Composites are drawn for several reasons; first and foremost, to help develop leads on the identify an otherwise unknown suspect of a crime.  When used in the proper manner, composites are a valuable investigative tool; they are media friendly, allow for public involvement, and can be sent out to agencies by utilizing the quality e-mail capabilities of the personal computer. Utilizing this method of distribution, all departments, and news media, have the information in their hands to develop a possible suspect, and an with sufficient additional evidence an arrest of the suspect. Composites can be used for any crime with an unidentified suspect, ranging from shoplifting to homicide.  

Creating a composite drawing requires skill that goes beyond the technical. The artist must also be able to interview and relate to the witness, eliciting valuable information that will form the basis of the drawing. A composite drawing is made through extensive knowledge of facial anatomy, drawing skills, and perhaps most of all excellent interviewing skills (cognitive interviewing).