None of those poses are flattering to her.
1 - REALLY awkward crop. Why would you cut off her head? And her toes are way too close to the bottom edge of the frame.
2 - REALLY awkward pose *and* crop. Makes the guitar seem phallic and not in a good way... and her leg it just looks... detached. Her body is also straight onto the camera which isn't flattering.
3- Awkward pose and crop again. Straight onto the camera which isn't flattering and making her arms look... ::searches for politically correct term:: ... unattractive?
4 - Not showing
5 - Not showing
6 - Where's her neck? We're you using a wide angle for this? ::checks EXIF data:: Yeah... you were... the wide angle and the angle you have on her makes her thigh look bigger than her head.
What were you using for lighting? Anything? It looks maybe like on camera flash? OCF isn't flattering for *anyone*.
I see this is your first post... I'm not trying to scare you away or "be mean", before anyone accuses me of it... that's my honest critique.
I suggest you research the basics and keep practicing. There's much more wrong with these images than what I just listed, but I'll some other people have the floor.