I think it might need some more warmth? maybe? and flash behind the trees or bushes or whatever those things are is putting some harsh light on the back side of her face (on the first 3) But im no photographer. just an opinions.

But the potential here is amazing, maybe a little lighter and more warmth, and you have my vote to keep the word photoshoot in hahaha.

Edit: I also remembered that your still learning with the umbrellas, but you should move the one you were illuminating her with or different settings, i think thats what is making me see the cool in her face and skin.