The job description of a model varies by the type of modeling job you are hired for. However, all models must keep an up-to-date portfolio of their work to include photos of themselves via composite cards. This is necessary as potential clients or modeling agencies may sift through portfolios and composite cards before inviting a model to audition. The composite card would also include their body measurements. Some models specialize in showcasing one of their body parts, such as a hand or foot. There are also fitness models when an agency needs a more athletic model for a shoot. Along with these types of models, some models also do photoshoots to help sell a product and maybe featured in online ads, billboards, websites, catalogs, or even on TV. Other models work to pose for artists or art students. They may be helpful for aspiring artists learning composition or fine artists like painters and sculptors.