Overall its a very nice image. I think you could improve on the light, while I do see that the stock image has that sort of light too, it is a light that you always try to avoid in photography, and I do think softer light would work better here too. Overall the shading is very nice, just the face seems to lack a bit of it (e.g. the lips). I like the colours here, they do work well, and create a good mood for the kind of character you are displaying. So nice work overall. I do like it.
Just thought I'd randomly browse through your gallery and saw this. Wow. You're a great artist. The pose and anatomy here is great--so lifelike. I love the contrast in the lighting and all of those folds in the shirt. I think I like her hair most though. Very well done.
really love the strong contrast the light gives as is drifts though the windows casting its shadows like a sunset or the breaking of dawn, the light accentuates the soft curves and folds very nicely done. love how the purple backdrop plays up on the the skin tones and shadows really skill full work. ^_^