This is the best of this series ... lots of nice variety, posing, expression etc.   But I'll be critical for a moment to sacrifice vanity for educational purposes!

This one has too much distance between the heads ... even from a distance it is too far.  She's too tall and he's to short.  Perhaps he could have sat on the arm of the chair.  Then the levels would have been better.  See how the distance between them is magnified on the closer shot.

This pose is OK but a little contrived for me.

These are all nice but I'd prefer her more behind him to thin her down.   Particularly with her in a lighter color putting her in front makes her look bigger than she is.  The more of her you can put behind him the more flattering it will be of her.

Finally ... the best with the heads about the right distance apart (the rule is to have the lower person's eyes lined up with the upper persons mouth) .. and her hidden behind him.