1. I think better light and closer crop would of worked better.
Her face and belly seems to get lost a little in the shadow. For this kind of composition, both your subjects are important and they both should be lit at "similar levels"
2. Too blurry and the light is a little harsh ... again a closer framing to reduce some of the black space on the left might be better.
3. Good light, great softness but again, framing is a little bit off ... try and reduce from the black space around the subject (especially at the bottom - since she is levitating right in the middle of your vertical).
Also, as an advice, there is no such thing as levitating persons. Always try and "hint" that the person is sitting on something.
Play with the light so it will sort-of show a silhouette of the object is sitting or if is on the floor, show a little bit of the floor as well - even if is just a little bit. Will give the image "stability" and complete it.
4. Same as before, framing seems a little bit off - too much black space especially behind your subject. And as on number 3, there is no such thing as levitating. Needs "stability".
5. I think this is my most favourite from all of your pics (posted here). Again,better framing will help (reducing some of the black - especially on the left side). And again ... your subjects are levitating ...
Overall, nice pictures and great try-outs.
My advice to you will be to pay more attention on how you frame, compose and learn how to control your light more.
And levitating is fun if that was intended, otherwise, try and give your subject a base to sit on
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