hmm, magic-wand to select the sky, then curves to darken it and add some contrast? Nice shot otherwise. But now that i understand how to fix that sky, i would love to see it fixed!
With this photo, nice as it is, I would just totally crop that sky and create a photo without sky. I did the "scroll crop" - testwise - by scrolling the sky out of my screen, and it looks better immediately, I think.
merge the images in any photo editing software. No biggie.
Well YMMV, but personally for me enjoyment of subjective photography comes from the challenge of interpreting a scene within the available stops, in one exposure. Its an impression (exclusion as significant as inclusion).