C&C per req:
1. Awkward crop; always try to avoid cropping limbs right at/on/near joints such as the elbows here. You've lost a lot of detail in her hair below her chin. A reflector, properly placed would have reduced the depth of shadow here and added some nice catchlights to her eyes.
2. Her expression seems to say, "Are we done yet?" Remember that as the photographer, you are responsible for more than just pressing the shutter-release. This image seems rather under-exposed, and in need of fill light. I would suggest using longer focal lenghts and larger apertures to minimize the depth of field in your shots, and while the plant does, to some extent balance the subject, I think this would have been much better in portrait orientation.
Just my $00.02 worth - your mileage may vary.
~John