My try on your picture, Issa.

My attempts!

Clouds1 was under-exposed by about 1.5 EV and Clouds2 by about 2.8 EV. Adjusting the raw brought out the noise. My old Canon 400d is quite "noisy" by modern standards.
I gave both photographs a slight colour boost which exaggerated the noise. I then applied the G'MIC filter - Iain's Noise Reduction - followed by a very slight sharpening.

Issabella's lovely photo - very gentle treatment!

david.

Thank you Dinasset. I like your improvement a lot.

I made an excursion yesterday with some friends to visit a beautiful Aragonese village called Alquezar. I had visited it a few years ago but it is currently much more interesting due to its opening of hanging walkways crossing along the Vero River. This was a walk of 8 km, walking by them and some very steppy zones until arriving at them. Here some photos I did.

Issabella,
Beautiful photographs of magnificent scenery!
My plays with these photographs.

david.

The other three photographs.
david.

Thank you so much David, very nice results in enhancement the photos.
I see that it's better to reduce the size of the photos to post them, but if someone wants to have the original sizes, please tell me and I'll set them in zip.
Here a few more photos
I really find it difficult when there is too contrast from shadow to very sunny zone.

Issabella, I am a poor photographer. If I had obtained the quality of your photos, I never would have attempted any touch ups!

Very nice pictures, Isabella.
I'll play a bit with them when I'll have time (not during these days)

Thanks Pat for your comments.
Dinasset, I'll wait for your plays no problem.

Issabella,
It is great to have such wonderful photographs to play with. If you look at the histogram, none of them have excessive contrast - I think they are well balanced.
I have tried to only make small adjustments, mainly in the mid-range.

david.

I decided to revisit the waterfall picture.

david.

Well done David! I like your improvements. I'm glad that you find the photos well.
I still have pain in my legs after walking so many kilometers up and down (not only by holding paths)

Issabella,

I hope the legs are recovering today!
The latest three photographs - the one with the steps, I have actually increased the contrast locally.

david.

After a so wonderful trip, a bit of pain in the legs should be acceptable….hehehe.
Time to sit in front of your PC and create.

Had a bit of time to prepare my first set of modifications to your sources.
In general I like less light colours, so you'll find darkened outcomes from my side: it's just my taste.

Here they are:

...and...

...and...

...and my last triplet.

If I'll have more time, I'll try additional variations, using more...creativity.