1) pretty good, no major comments.
2) My favorite. Love the genuine looking smile and personality pose.
3) Seems pretty snapshot-y. Could be standing around in line for something, they don't look very thrilled to be there.
4) Maybe a different crop? Her shoulder looks crazily huge here, because you probably cropped immediately above her armpit so it implies that the skin just expands on infinitely rather than being an arm and a back separately. If this is all you have available (i.e. it's not already cropped), then I'd crop tighter by 15% ish to help.
5) Pretty good. Not as charming an expression as #2, but certainly good.
6) Feels like a clothing advertisement, since her face is de-emphasized, and nothing is happening really, the clothes are the emphasis. Which is great or not so great, depending on intent.
7) Obviously, the more intimate version of #6. Seems like you were thinking along the same lines as I was in #6 comments, and this is exactly what I would've suggested. I like it, on par with 1 and 5.
8) Second favorite. More interesting content for sure than #2, but also feels a little more staged/a tad less genuine, and that weighs more to me. But great photo regardless. Also maybe worry more about the trees here than in the others since they are comparatively less blurred looking and potentially distracting (slightly higher camera angle perhaps?)