This set is good, but i think that you're getting something wrong. The thing is that the photos seem kind of unsure of what they want to be. If the model is the main protagonist, why not fill the frame with her and blow out the background more? If the background is the main attraction, why have it out of focus? let me elaborate.
If they're supposed to be portraits, the background is too distracting because is not out of focus enough. Your eyes are drawn to it and lack a spot to focus on, making it a tiring experiece. If you concentrated more on the background by having it in focus, and having the model complement it, it would be perfect, but as is, it feels as if your lens is unable to have a narrow enough depth of field. Dont try to have everything in the picture (meaning a great portrait and a great landscape) you just end up with sub par versions of both, because one takes away from the goodness of the other, dont try to have the cake and eat it. I would suggest filling the frame with the model and using a very wide aperture as to throw the background out of focus, bringing the attention to the model (who is very beautiful, by the way) thus making for a more striking and pleasing photograph.
Also, a minor thing, the model and part of the sky feel overexposed, making it not that pleasing to see. Sorry to sound so negative, just trying to be help helpful.