Congrats on the blue. It is a wonderfully simple image. My first thought is that more contrast could be good, but at the same time, the minimal contrast of the image lends to the relaxing atmosphere of the image. Cheers.
Wonderful photo and nice use of slow shutter to capture some motion and get that fourth element into your shot! Love the pastel colors of the sunset and the interest added by the hammock! I think all the light is on the left side (obviously) and I am constantly moving away from the hammock to stare at the beautiful orange glow. The compositional element (rule of thirds) used to make the hammock the subject didn't fully create the main focal point. If the hammock had some more light shed on it, if it were brighter, that would have helped to emphasize that as the focal point.