Coming back around to make a comment. Very nice image. I like the movement in the hair, and the shadows. I can't decide if I like the head being partially cropped out? I'll sleep on it. :-)
Really like the conversion to B&W. Having the head chopped off really makes the pictures but not sure how others will view it. Would have been nice to see a little more of her thumb.
I like how you cropped her head off. However in doing so the leading line leads you straight to her behind, which may not be a bad thing but it makes it more like a photo for a jeans ad. If that's what you're going for then this is perfect, I wouldn't change a thing. If not then a landscape orientation would have been better, IMO. It would allow more of the road on the right to be shown and thus it would shift the leading line over to the right and that way it would guide the eye towards her destination rather than her behind, if that makes sense.
including the head might have been nice, if possible a bit of the road behind her (in front of her really, since she's facing away) to show the distance to be traveled