In one embodiment, a method includes determining, by an application running on a client system of a first user, one of a plurality of cameras of the client system being used to capture an image. The plurality of cameras may include a front camera and a back camera of the client system. The application may detect one or more of the first user and one or more second users using the determined camera. The application may determine whether one or more image-capturing criteria are satisfied. If the one or more image-capturing criteria are satisfied, the application may capture the image using the determined camera. Otherwise, the application may provide feedback to one or more of the first user and the one or more second users to perform one or more actions in order to comply with the image-capturing criteria.