I think you did well with the subject in this set. She has great expressions and I think she is well lit. (I agree that she may be slightly over-exposed, but it isn't bad). I do however, find the background really distracting in most of these images. There's a big tractor wheel and a bright spot in the first, a barn coming out of her waist in the second (this may not have bothered me so much if I wasn't already aware of backgrounds b/c of the first one), and bright spots in the third (this is probably the most distracting to me),