Growing a model and keepsake business depends on both generating new client work and satisfying both new and existing clients. At some point, I decided to measure what models I shoot only once and those I shoot in 2 or more sessions. Working with and retaining repeat customers has multiple rewards. I have and use a service evaluation form to determine what the model liked or didn't about the experience and when I sense a particularly high level of enthusiasm, I ask for a testimonial that I share on my FB page and website.
With about 400K members on POTN, I am hoping to get some idea as to what level of "repeat success" you experience, particularly with paid work of course. My experience is that about 40% of the models I shoot with sign up for a second session (or more), staying within a pretty narrow range of 38-42% depending on the period. Do you track this for yourself, and if so, what are your goals on this if you have?