Girl on railroad tracks
assuming you want some feedback on this.
first of all this is a nice image, but i notice you have plenty of iso, exposure and aperture to play with, so it remains a nice shot.
if your chosen style is B&W, then you have even more latitude to push the image, so start by pushing your exposure by a couple of stops towards 1/500-1/1000 sec, then open up the aperture to further reduce the depth of field, leave the iso and focus on her eye's.
your looking here to push more of the foreground/background out of focus, if this isn't happening, get in tighter to your subject.
next think about composition, in this image the sunlight is to the right and behind her, so her features are in the shade, so think about reflecting/bouncing light from a reflector onto her face to really bring the image to life. you can achieve similar with a flash too, but diffuse it and snoot it to control the spread and intensity of the light, also your looking to punch a little catch-light into her eyes for that bit of sparkle.
let us know how you get on, would be nice to see your development.
I agree with prl105's comments. The only thing I might add is that she needs a wee bit more "breathing room" in front of her. But it is a fine shot.
My state of confusion has turned into a circle of confusion.
if the viewpoint is a little lower- you could have caught the tracks converging to the top - might have added a good prespective
I agree with some of the comments already made and add; not sure that using the railroad tracks as the setting for this shot constructs the best presentation of the girl. For me, the tracks by themselves can be interesting, a girl on a train might be too, but, a girl sitting on the train rail just strikes me as, "Why is she sitting there?" and "I wonder when the train is comming?" But that's me.
I agree, the image would look better if the camera were held level.
Also, it looks like a filter might be degrading the image. If so, take it off.
My suggetion to you would be try and get more light on the subjects face, that will make this picture pop. This could have been achieved with a fill in flash to get rid of the shadows, to using post processing and clearing the shadows from the face...