I don't normally edit someone else's photo, because I'm still learning myself, but the image you have is really good, it just needs a little more. When I downloaded a copy of your image it appeared that the white balance was off slightly. I did a color balance, curve adjustment, used a luminosity mask (thanks to Tim Tucker for explaining this to me) to brighten the image and highlights, and applied a blue filter to enhance the High Key look. I'm sure there are others more qualified than I that can improve it even more. As we all know opinions are like noses every one has one! LOL
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