As a general rule of thumb, doesn't always work naturally, is that for portraits, large amounts of skin not part of the face will distract from the face. I think the bare arms do that with your subject here. Also, the shirt is very busy.
On #1 and #2, you missed the focus. In #1 it is on the pole behind her and #2 it is on the wheel. #2 is underexposed and could be a bit warmer.
#3 definitely suffers from the harsh-flash look.
Use of the backgrounds for context and the overall composition is nice, especially with #1 and #2, though the choice to have her look into the short side of the frame in #1 instead of toward the leading space is a curious one. Not necessarily bad but not traditional, either. I'm not sure it works (on the flip side, I'm not sure it doesn't, either.)
I might have tried a shot from a different angle with the wagon wheel. It's nice, but does give that 'spokes coming out of her head' look. Also the space above her head could be trimmed a bit without much loss to the image. Not much, maybe leave 2/3rds of what's there.