Good clear picture of a goodlooking model. I like the blurred background. It gives a sense of place without intruding. The yellow reeds and purple sweater work well, as they are complimentary colors. The colors from the sunset are great.
The only thing I see detracting from this very nice image is the expression on your model's face. The painful look (from sun in the eyes) doesn't work well for a portrait. If you have the chance to do this again, I'd suggest having your model face slightly away from the sun and if necessary, use a bit of aluminum foil or a diffuser to direct reflected sunlight to any ensuing shadows.