I like #3 the best. In #1, her skin tone looks weird to me, but it may just be my monitor, same for #2. #4 is too tilted so the trees look weird IMO.
The tilt doesn't work for me in 3 but it does work for me in 4 -although the vignette in 4 seems a little too dark.
With #1, I find the bottom half of her body very distracting, I am inclined to crop to a head shot & warm up the image a bit.
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