Overall a nice set!
1) The strongest of the three IMO. I don't know what your skin smoothing/sharpening work flow is, but it looks to me like you smoothed/didn't sharpen the eyebrows. Or maybe it's just a function of the makeup? Either way, the yellow of the hairpiece seems very crisp, yet the rest of the face is so smooth that at first glance it suggests to me that focus was missed and is only on the hairpiece and not the eyes. Looking more closely I can see that the eyes seem to be sharp. So if the depth of field includes everything from the yellow of the hairpiece to the far (her right) eye, then the eyebrows should be expected to be sharp as well.
2) I like this one and agree that I don't see a different crop working well. I do notice some haloing around the hair (lower left corner) - I'm guessing you did some work on the background, maybe cleaning up some stray hairs? This shot might have benefited from just a touch more light from camera right onto her face and far hand - the different lighting levels on the two hands, in combination with the crop (ouch, just noticed the cropping at the wrist!), give it a somewhat disjointed feel, almost as if the hands come from two different people.
3) The hand position isn't doing much for me...I think a tighter crop might help with that (just my preference). The lighting here again leaves me feeling like the image is a bit disjointed. On the left side (well lit) you have the upper hand, face, lower hand and neck/shoulder. On the right side (much darker) you have the forearm, then upper arm and upper chest. Maybe it's because of the hair coming down from under her chin to the bottom of the frame, but the way the lighting and the depth of focus fall together these two areas could almost pass for different bodies.