Welcome to the forum @BayerSe. You will find very friendly and (usually) patient people here. Here are my thoughts (forgive me if I am saying things that are too obvious to you).
It is better to start with a vision. That means one should know what one want to do with a given image. (Like you said above that in your image contrast is too less and that it looks too frigid to you) This way, you can choose only those modules of a program that deals with issues one has already identified. Therefore, how good a given program is depends on whether it has the tools to implement your vision or not. I find that RawTherapee has all the tools that I need to process a raw file and GIMP has all the tools that need to locally modify a photo.
Here is an attempt at your example.
Vision: To accentuate the contrast, make photo friendly and create a subject of obvious interest in the image.
Implementation:
a.The sky is reflected in the snow making it bluish and frigid. Thus, set the White Balance on the snow to make it pure white.
b. Look at the histogram and use the tone curve to adjust black point and white point. Activate the Local Contrast module to add… well… local contrast.
c. The line of birds in the sky gives the photo an extra dimension. Accentuate it by adding a graduated filter to darken the (overexposed) sky.
d. The juxtaposition of the glaciers and the birds give the subject of interest in the photo. So crop the image to remove the foreground water expanse, which was distracting the viewer from the main subject.
Done! Here is the result. 20180829-171901-1.jpg.out.pp3 (10.8 KB)
Here is my interpretation: Set white balance toward warmer colors but keep the blue color in the ice. Do some contrast enhancement (sky, reflections on the water) with tone curves. Do some sharpening and structure enhancements (highpass, equalizer). Increase the reds in the sky and water (tone curve). Try to recover the burned areas in the sky (highlight reconstruction with color reconstruction). Make ice brighter (color zones). Crop so that the animals look a little larger and the birds are on the left.
The colors look now “interesting” with the blue ice and the warm sky. How was the impression to the naked eye?
Thanks for the very warm welcome @shreedhar! Your comments and descriptions are very helpful, I’ll take a closer look on your steps over the weekend - thank you!
The unadorned image had vignetting in the corners, so I started with a crop. I didn’t mess with white balance because the bluish tint gives the feeling of “Cold”…
A curve was the next operation; blacks weren’t at black, so I scooched the lower control point over to put them near 0. I put in another couple of points to make an “s” curve to increase the contrast.
I sharpened the full-sized image (I don’t normally do this) to put some “sparkle” in the ice.
A bit of saturation because I love the blue colors that come out of ice.
Resize for posting and my standard post-resize minimal sharpen.