Okay a couple of thoughts none of which are going to be pretty..
The first image looks like you accidentally slid the slide when the scanner was scanning it. I hope its just a goof and not intentional.
The second image, you have high lights and low lights...on her face and in the background. It doesn't work for you and doesn't work for anyone else.
Shooting at high noon, if you ask the vets...particularly if they are lazy wil tell you its the best time of day to shoot...but here is the skinny most will not tell ya.
Get your model in the open shade but make sure, that whatever is going on behind her is within 3 stops of the foreground. Otherwise you will wind up with "white without detail" meaning you blew the "sh&t out of the background"
The reason the lazy vets like high noon, simple we don't need reflectors or assistants, we use the environment to make that happen.
This first image pushes it to the extreme, where there is still some detail..but a bit over the edge.
This one the model is balanced with the background.
and finally, a member had mentioned an old rule about the bright proceeds and the darks receed...what he says make sense. A great rule to live by.