Nice colors, but why is everything off center, if you are trying to practice rule of thirds it does not always apply to people, these should have been centered, its throwing me off.
Fill the frame with the people without cutting them off in bad areas such as joints.
1 - why are her feet cut off?
2 - a little more room to have the hands on the belly in the shot
3 - although i'm not a fan of chopped off heads this is a pretty strong image.
4 - fill the frame with them.
First...my standard intro to anyone "new" to me on this forum...
My comments or suggestions below are not a criticism of you, your model, your talent or skill. I offer them in a friendly tone of voice and with the sole intent to help you with a second POV and set of eyes. If you read sincere questions and simple suggestions as "criticism" of you, then you will miss how I am trying to help you.
Of course this may be your own "style" or your own "vision" and I suppose we can assume that the images look just like they do because that is exactly how you like them. That is OK too. It just shows that there are differences of "opinion" on what looks good. IF these are exactly what you want and like, then by all means continue making your images look like that and have fun doing it. I can only speak for myself and what I do or do not find appealing in the posted photos. As I always say: "Follow your own muse."
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Quick Comments/Suggestions:
Image 1: Crop
Image 2: Shoot wider
Image 3: Shoot wider or change your framing to include the heads
Image 4: her face looks yellow. Redo the post work.