In general I like the pics. But when I look at my pics, I look at them and say, what could I have done to make this pic any better for my personal tastes. So I have something to strive for to take me to the next level.
I think the models personality is coming across well in picture 1 and 3 the best.
In picture 2, due to its angle, the model's head appears alien in shape (no offence to the model). The closest thing to the camera will appear the largest and so the top of her head appears round in shape and comes down to a point (her chin). The camera left (her right check bone) appears to come out while the other side does not (due to lighting) and thus I see a wierd shape on her head.
In picture 4, her right thigh (camera left) is not complementary to the model. Since she has a few extra pounds on her that pose isn't complementary to her. I would have her slightly turned away from you on the hips and thus not having the thighs straight on like it is. Then when she shifts her weight like she did, the thigh doesn't stick out like that.
She seems to have good skin, why overexpose the face like you did? I know some people do that regularly but to when a model has good skin like she does, I wouldn't do it. I get in nice and close to show it off [img]/ubbthreads/images/graemlins/smile.gif[/img]