What are you trying to say with this photograph?
Maybe a polariser disappearing the tree reflections, less of the lake, the clouds more defined, perhaps with an orange filter to accentuate the anger of the sky even if there isn't any, perhaps blended top to bottom, wait a couple of hours for the clouds to 'make' what it is you want?
You don't have enough depth of field so the bottom of the image is going out of focus, try f11, f13, f16 + or elevate the camera, or both these and check your depth of field before you take your master image. Also the bottom has little to add to your photograph so I'd crop it a little.
This one would perhaps look better in colour, try different and radical colour temperatures in B&W and colour as I sometime this can turn a typical photograph into an eye catching one, or help along with other processes.
Spend hours and hours on it and enjoy what you can learn from it.
And finally watch the Ansel Adams documentaries on YouTube and feel the awe
Well done!