Do you classify these as portraits as it has been a topic of debate amongst my peers?
My opinion is that when you photograph people who are aware of being photographed to say something about them it is a portrait. This is the case in your images, clearly.
I'd like to know what you think about them and how you'd improve on them.
Thanks for sharing your work!
My first observation is that you have three very different portraits - a wide on-location portrait, a traditional 3/4 portrait with neutral background, and monochrome head-shot with some creative twists. You're obviously trying different techniques and approaches and that's a good thing. They may not always work well, but experimentation is an important tool towards getting strong, consistent results. I am a big fan of on-location portraits, and I applaude your choice of photographing your subject in nature. It's not easy but it can be very rewarding!
From the point of view of possible improvements, I will focus on the first image, which I think is the strongest. You have a pretty young woman in a beautiful beach posing with a dark dress in a somewhat sexy or suggestive position, surrounding by big rocks. Because there are so many elements here, the potential for dissonance is greater unless there is a unifying theme, which I just don't see. A unifying theme could be a feeling of exhilaration and joy coming from her being there, or the drama of beauty in a beautiful setting with beautiful light, or perhaps the beauty of the human figure in nature - without something that drives the choices you make as a photographer you may end up with the germ of a good idea that doesn't quite convey interest to the viewer. So how to make this better? Start with the idea or feeling you want to express, and then use camera lens, angle, pose, lighting, etc to bring your point home. As is, the model feels like standing on a random rock doing a studio pose, without really connecting with nature or the viewer... the rocks are visually very strong and they don't connect with the model because of the different in levels of illumination... her face seems overexposed and the rocks to the left underexposed.. as a viewer I am pulled by the big rocks....
One suggestion would be to photograph her with a simple nature setting - namely, the rock she's standing on and the beach only, without the competing visual strength of the dark rocks. Making those boulders to the left lighter doesn't help... they are compositionally unnecessary. Simplifying the composition makes it possible for her to be in her pose in a more natural way - this is because the more nature you put in there, the more I expect her to be there for a reason, like interacting with her, or otherwise connected to her. If you remove elements of nature to a minimum, then I can warm up to the idea of her being in a black dress on the beach. It's all about her, and the beach is just a simple prop that can work well.
Second, once the composition is simpler it may be a good idea to ask about key - high or low key? If low, then darkening the background and making sure she's not overexposed would help. If high, she needs to wear something different (lighter) and the image may work better. A preplanned choice of key can make the image hang together better. A low key decision may call for photographing her closer to sunset, with a more dramatic sky. It would also call for "short lighting" instead of "broad lighting" wich would create more mystery and drama.
Hope this helps!