I think lightening up on the sharpening could do wonders. This image doesn't strike me as one needing any at all honestly, with it's intended serenity.
I would also focus on the banding in the sky and the halo on the horizon. Looking forward to more go arounds of this one as I feel the image deserves it! I know the feeling of wanting to overcook the sky to get the deep tones and striking clouds. That typically happens when I didn't carry a CPL with me, which I always do now! 😉
Btw, my favorite way of inducing contrast is using channel mixer layers. Put a channel mixer adjustment layer on, switch it to one of the mono presets (or tweak your own) that represents the tonal shading you would like. Then switch it to either overlay, soft light or hard light, turn opacity to 0% and slowly bring it up while keeing your eye on the image. It's great for increasing contrast in a way that shapes the tones of the image instead of boosting it globally. You can also use a mask on the mixer in case you want to shape specific parts of the image, like the shadows, etc.