Well, since Travis said my name I guess I better give an opinion
Her pose in the first image is a little awkward, I think a big part of that is the car being so short, she had to bend lower than I would have liked to see her for the pose you were going for. Her feet are awkward, I usually like to bend the front leg with the weight on the back leg, but that is a rule that can be broken. Here her feet just aren't in a feminine position and she looks like she is squatting too much. Pretty girl though.
The second image she looks like a giant next to that little car. I would have scrapped that pose all together and tried something else.
#3 has harsh light, but this is a great example of where bending the back leg really worked. I like the angle she is shot at because she is shorter. Two nitpicks - I wish her left hand was more graceful and that her tummy had been flattered a little more, the shirt hanging in front is not doing her any favors, although I see what you were going for trying to expose skin.
#4 is killed by that harsh light again, but the pose and everything are nice and classic.
#5 the car is on the wrong side of the composition, it is facing right out of the frame. Love the sky though. I wouldn't have tilted the shot and cut out more of the ground and captured more of the sky, I would have not shot the car to the side of the frame, by tilting your camera up it would have been off center and closer to the bottom, creating a dynamic enough composition.
#6 makes the care look great, I don't care for the background and tight crop, but like I said, the car looks great.