Dramatic shot, but I think you've kinda killed it a little with your processing.
If I was going to use a longer exposure to flatten the waves I would've also tried to shoot a much shorter one to arrest the movement of the birds and combined the foreground.
I find the images over-tone mapped which has washed out the colour, removed the impression of light and generally flattened the image.
In a very basic explanation, when you tone-map you bring the darker tones up and the lighter tones down. To do this without altering the colour balance can be thought of as the opposite of adding contrast. Now adding contrast not only boosts the difference in luminance it also increases colour contrast by
subtracting grey, it saturates the colours a little. Tone-mapping de-saturates the colours by
adding grey. The trouble is that if you shoot a scene into the light and shadow or on a generally dull day colour can be muted as in your dominant hues are not very dominant. It is very easy to wash them away. Now in your colour model browns are a hue and so increasing contrast and saturation with no other dominant hue brings forward the brown and grey.
The impression of light, and I can't stress this enough, is the
difference in local and micro contrasts within your image. It is not contrast and micro-contrast alone that produce the impression of brightness and light but the variation in the patterns of contrast. Remove this through tone-mapping and you remove the impression of light, no matter how much you push it after the image will look as though it's shot on a dull day.
Now there is no way I can edit your edit to look realistic, and I offer these not as correct but only different to try and highlight the relative lack of colour/impression of light in your original. Offered as helpful advice. Try editing it again but with less tone-mapping.
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