You have a very nice,naturalistic style. Nothing overly processed or outlandish, with "realistic" looking skin tones and no overriding layer of noise reduction, no cutesy or clever Photoshop actions or filter effects. I like this kind of photography. The outdoor shots look like they were all shot under low-contrast,overcast outdoor lighting, so the lighting is almost shadowless; you could, if you wanted, bump up the contrast a little bit on the first photo, to give it just a little bit more snap.
On the second photo, the one with her feet in the air--her nose appears a bit too large, which looks to me like the result of using a bit too short of a focal length lens,from slightly too close a distance, causing the apparent perspective distortion on the nose. I do not see that same look in the last shot, the one where she's facing the white wall. The skin tones are ever so slightly too red in the last photo, especially on her hands. overall though, if this is your first-ever senior photo shoot, well, wow...quite decent.