I can't see these on my work monitor, but I looked at them on my phone. Looks like a very nice exposure and nice lighting! Good job. One thing that many of us have problems with when we take pictures of people is, attention to the background. Your background for this image is very nice, but you have to watch that fence rails, branches, and other items aren't right behind a persons head. It will make it look like they are coming out of the persons head. I think if this was angled a little different, the fence rails weren't at head level and clear of her, it would be a stronger image. That would also put here face and head in the nice blue sky background and give that separation or contrast others have mentioned.
Just my 2 cents.