I find Julia's attitude pretty natural and good, however I think the composition with this big column is not easy. Colors, on the warm side, are nice for me.
While Julia does seems to be a little bit out of focus (the colom seems to be the focused point), the background is also too sharp and distracting. Maybe you can try shooting wider open and reducing the DOF ?
Highlights in the sky and in the ground (bottom right corner) are burned and also distracting.
Very nice work with the exposure here, given the backlighting on the subject. I get the sense you used fill flash or a reflector on her face. If so, you used it very well as the lighting appears very natural. I think the color and pattern of the column becomes a bit distracting, but this is a very good portrait overall.
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