You do not need to take professional pictures, holiday snaps will do as they know what they are looking for. These agencies get bombarded everyday so don't expect an overly welcome reaction.
Espacio Publicitario para Modelos Masculinos Profesionales y Amateurs. Manda tus fotos a firstname.lastname@example.org Male Models Publicity Space Prefessional and Amateurs. Send your pics to email@example.com