You don't shoot people. You shoot models. You're the director/photographer. The image is your product, with the use of that model. And of course both of you can add those images to their portfolio.
You started this studio series as an exercise in studio lighting. I enjoyed that. But now you're a step further. You forget the content of your product: illusion, suggestion,emotion, expression etc. There's nothing left when shooting just one person.
You're reducing yourself now as a machine taking pass photo's.
In those photo's the model isn't the subject, the shoes, clothes etc. are the subject. But look at the mode photo's. Sometime you see a model with some expression. And you see that immediately.
You can compare it with an actor doing audition. The difference between reading a scene or playing a scene.
Tell them a joke
George