First let me preface this by stating that the opinions expressed are my own... you are free to form your own and I encourage you to do so. But let's limit the current discussion to the images you posted.
I don't really care for the first image for several reasons. Her leg position foreshortens her left leg and makes it look like she would have a difficult time standing. General rule -- both legs should be about the same length. Best way to do that is keep them in the same plane perpendicular to the line from the camera. Or if they are pointing toward or away from the camera, keep them together.
Then her head is tilted away from the viewer. That's almost universally a sign of distrust or disinterest, definitely not friendly though. A little head tilt toward the viewer would enhance the connection with the viewer.
Image two has a cropping issue with her right hand. General rule - don't crop through hands or wrists.
I think a lower camera position would have helped this image. She is looking up at the camera with her chin lowered and a rather non-committal expression. Kinda sends mixed signals... A hint of a smile would have possibly promised naughtiness, a frown could be read as contrition, but her present expression just doesn't say much...
So that's what I see in the images. She's a lovely girl, and I think you were close... but better images were there for the taking.
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