Upload & Sell: On
I think you have a lot of potential with this shot, but there are several things I would suggest. First, make sure you have a level horizon when shooting along the ocean. Your horizon is leaning heavily to the right, and this is something that can be easily fixed in post processing. When shooting, consider getting a bubble level for your hotshoe, or if your camera has that feature built in, use it.
Secondly, the sky portion should be brighter than the foreground, but with this photo as presented, the waves in the foreground are significantly brighter than the sky. This means that perhaps you used too strong of a grad ND filter, or if you blended exposures, you used too bright for the foreground, and too dark for the sky.
Finally, the color feels very magenta for the top of the exposure, but very neutral for the bottom. The bottom feels natural, but the sky feels like it has been greatly manipulated with post processing. For a scene like this, I would expect to see some wonderful warm light (yellows and oranges) near the sun area, then a wonderful blue near the top of the frame. Instead, I see a lot of magenta that would only really show up well before sunrise or after a sunset.
If this was mine, I would go back to the drawing board and see what can be done. I do believe you have a lot of potential here, and would love to see a repost.