no 5 is more or less perfect, very good soft light. Her eyes are nice, big and bright like they should.
1 and 2 could be improved, particularly the dark areas round her eyes and the way she wears the green top is maybe not perfect in my opinion.
4 has some potential but needs more work. Some reflectors would have helped to fill shadows, while background needs to be black (move lights in, reduce power, and clean up)
3 is really not my cup of tea. By using wideangle lens and weird angle you have brought out the imperfections of her arms and the neck. In fact it should have been full length here, and the shoulder are should be better covered, as well as the neck when shooting this low.
I would like this better if you shot with a longer lens, like 85mm full length, 200mm headshots.