Great process, but the sky makes to much ditraction to the rest.
I maybe would have croped it down a bit.
Sky is off with a slight blue mist. Maybe one or two darker shoots. Would also enhance the contrast on the wooden parts and on the gear wheels.
The sky is like when shooting "gray uniform" ...
Enhance the contrast has a negative effect on the rest of the image.
I spend a lot of time to perform the processing of the image but the conditions in the shooting have penalized me!
You can do selective contrast by layers and blending in Photo Shop
I love your scene but it needs work. I am new to HDR and photoshop also so I have the same struggles.
The Foreground process is Clean and Sharp. Background not so much. Superb nonetheless for Me.
Subject with great potential for HDR. Perhaps another perspective to do better.
Can not left there has a wall behind there has a fence and has a straight hole with a 2 meter river.
In the photo it's that or nothing! :/