I think these pictures would benefit from a closer shot of the model.
Also trying to keep the focus on the model and not the scenery (unless it adds some element to the overall picture; the grass seems unnecessary).
The composition of the second picture doesn't work for me either (dead center).
In the first picture, the bottom right corner has weeds that take attention from the model.
Both are nicely exposed in my opinion and very pretty model. =)
of course, I'm new also and could be completely wrong...haha