Silvija, I do like the last one but in my opinion it needs the near foreground cropping away. This will also put the horizon in the lower third. I am not keen on curved horizons and whilst a product of the lens, given the subject matter it probably could be straightened successfully in PP.
Hope you do not mind but I had a quick play....
Hello:-))
I really do not mind when someone visual shows me what to do and what I did wrong...It's very helpful because I had just started to use a camera(comapct) and to use PP...So:-) Thank you for your nice comments and for this picture.
As for the branch removal in your last image you need to use a soft edged brush set at 50% opacity. Select the clone area from different points in the locality of the clouds and sky and build up slowly. I sometimes find the galaxy or sponge brushes sometimes give good results but always build up slowly and avoid repetitive patterns in the cloned area. Lay the cloned pixels on randomly and sample from slightly different points every few dabs.