It *is* a very nice shot. It's beautiful. The model is gorgeous, the lighting is lovely, and the composition is fine.
I find one fault. I think you focussed on something other than her eyes. When I look at the 2048 pixel image on Flickr, the hair on her right, camera left, is soft, and it is just barely beyond her eyes. Her right hand and the left strap of her dress are razor sharp.
You should focus on her closer eye. When I download the photo to see the exif data, none is shown. If when you focus on the closer eye (probably her left eye, though in this case either would work), you still get parts of her that are out of focus, you can always close the lens a stop to increase the DOF.
It is still a fine photo! Were it mine, I'd print it, frame it, and hang it on a wall.