nicely done and a good first effort for sure!
Whenever the sky is very plain, I try to compose accordingly to put less emphasis on the sky, either by eschewing a standard rule of thirds comp, or placing a big compositional element (tree, etc) to block some sky, or framing vertically to make the most of a small section of sky that may have something interesting.
also, pay attention to your main subject, as a landscape photograph is not merely a big wide scene of landscape, but should have a singled out element of interest, even multiple elements. In this pic, I assume you want the viewer to look at some of the rocks out in the water, but there is nothing to lead me to any one in particular, for example. getting close to one interesting rock might help.
There is a pink cast to your sky, maybe too much, as if a grad filter was used, but the reflection of the sky in the water has no color. consider that any reflection should echo what it is reflecting, both in color and luminance.
lastly, the pointy rock on the horizon is very interesting as a compositional element, but the chopped off one to the right of it leads my eye right off the page looking for the rest of the scene. consider placement of objects that get cut off for overall continuity in your image.
A very interesting location and lovely attempt, no doubt. thanks for sharing and I hope any of this helps!