Hmmm, tbh, they aren't doing much for me, starting with the backdrops, which are a bit too ott for my tastes - that is a personal thing though.
1 - not sure looking up at her is the most flattering angle, its making her head look small and shoulders enormous, but I do think the pose itself works so perhaps shoot from a higher angle next time.
2 - sorry, looks like a snap shot
Using animals is tricky but you have to be patient and make it look natural, and that cat looks very unwilling.
3 - getting better [apart from the backdrop] but the lighting is very flat and making her look more moon faced than necessary. Also bra strap not working. key light at more of an angle with perhaps just a little fill in or even a reflector would have been more flattering and given more depth and shape.
4 - better still, but again lighting is a tad flat and the pose looks awkward, too posed if that makes sense
5 - my fav of them, with the major niggle that her specs run across her eyes [and the lighting, backdrop already mentioned].
Hope you don't mind me being so critical, but these could be so much better, though a nice start