Since you wanted C&C I decided to bite
First of all, lovely daughter... sometimes we forget that the subject is as important as our technique. The lovelier the model, the less we notice the technical details
Now, I think you could have done better by moving her INTO the light on the right. Perhaps facing the light and then turning slightly towards your lens. Right now it looks as if she is partly in shadow directly in front and tons of light to her left (your right) and some light (fill?) from her right (your left)
Note how her left eye is somewhat dark. It looks off balance with the other eye. I try to make sure there is lots of light in the face if a portrait I am making.
Catch lights are also a good part of a nice portrait and her left eye has not as much as her right eye. Symmetry is important to humans subconsciously ... we notice the smallest asymmetrical detail yet ignore poor ANYTHING as long as it is symmetrical. Just look at a photograph with a slanted horizon, it makes you look and notice ONLY the horizon being off

So I try to have balance in the portraits. I mean, go ahead and break rules and do whatever, just try and keep it symmetrical.
Finally, your POSITION I would change next time. The focal length of a lens DOES NOT MATTER remember... it is the Subject Distance that matters. Lenses simply magnify or demagnify (is that a real word? LOL) the image to project it on the sensor/film. But the Subject Distance is what matters. In this case, you could have moved back a little more. If your subject is too small on the frame, well, crop! or get a longer lens but DO NOT compensate by moving in to fill the frame as that changes the subject distance and that matters.
For portraits, I like to be at least 3 to 4 meters away for pleasing angles and perspective. DOF is subjective. I love SHALLOW DOF because is what we humans see in real life. IF you ever stand in front of another person and focus on their eyes, their ears are slightly OOF... try it for yourself

So I like it.
I did some quick PP on your image to enhance color and light. Tell me if you like it!
Cheers...
Manny
This is a protrait of my daughter, it wasn't planned, she was standing in the half-open front-door and I realised the very nice light. The light from your left comes from a self-made gold reflector I had handy. D700 with NIKKOR 50/1,4; raw conversion in CS3.
Your C&C are very welcome.
Cheers,
Korim
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Manny
http://www.pbase.com/gonzalu/
http://www.mannyphoto.com/
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