Composition is very classic and I suspect you were going for the vintage washed out look of the image. Unfortunately, the pale colors tend to wash out the image as a whole. Some contrast is needed, like a dark background or foreground item.
The model's expression is really not telling any sort of a story, other than "I am not sure I want to be here like this..." It is rather a shame because the model is certainly pretty and so much more could have been accomplished here. This could have become any number of things with the right facial expression and perhaps some more thought into a theme for the image.