Vanessa

The photos look nice, but they would be vastly improved by the removal of the hand from her mouth in the first shot, and the other image looks a bit weird with her arm and palm of her hand sticking out to the side of her head (I can tell that she was pushing up her hair with her hands but the crop is so tight that it just looks awkward and unnecessary). A lot of times it's hard to get good poses because a lot of models, especially non professionals, believe that they have to really work hard to do Something Interesting, but posing for portraits is subtle. It's more about connection and expression and slight changes of angle than anything else. For example, your first image would be amazing if that hand wasn't in the shot looking slightly large and obscuring her mouth - her expression and connection with the camera is fantastic. The second would also be great if her arms were down to her sides and her hair rested naturally on her shoulders (and maybe a bit less tension in her mouth but that's a different topic).

Don't get me wrong, I like your portraits! The natural open shade lighting looks nice and the model is beautiful. The only other thing I'd say is watch your color cast. Especially in the second image, there's a lot of green and yellow from the foliage reflected in her skin.

Hope this helps.

Also, even just a basic skin retouch using dodge and burn would do wonders.