I agree with all the above points. However, there is an element of subjectivity here as well. Art is subjective.
I would have had the tree toward the right side and sun toward the left, and I would have tried to recover some shadow detail. But then, that's how I usually like it. I don't like too much of a picture to be black or close to black. Many other photogs tend to love a lot of black because it creates drama. I say that's fine for portraits of people...but in landscape, not so much. Just my opinion.
There is too much area of your shot taken up by a sky that is too featureless for my taste. I would either add some subtle cloud elements from another shot, or else crop the shot to a wider aspect, to limit the sky area.
The rule of thirds is probably the most important compositional rule in photography, in my opinion...but there are many others. It's not always easy to decide which to employ. The other rules of composition, are also sometimes more subtle to spot.
I guess my main complaint is you didn't shoot several shots with slightly different composition, then ask which of those worked best.
Not every picture has to be the best it can be, just to justify its existence. I've shot over 30,000 pictures in the last 4.5 years, over 5 camera bodies (several were compacts). Even though 98% of those aren't worth exhibiting somewhere, I am still keeping the files. Many of them were also taken to record something, not just to attempt to get a nice picture. (And no, I'm not saying the opposite was stated in this thread...I'm just spouting off.)
Last but not least...don't get caught up in thinking a landscape picture always has to be done at wide angle. Many of my own personal favorites that I have done, were done with a fast telephoto, zeroing in on a subject...such as a tree, or even smaller elements.
The only time my work was published, last year, the shot was done at an equivalent focal length of 28mm, but it was cropped a bit. It was also a vertical, or "portrait mode". The final crop, I believe was more like what a 37 to 40mm angle of view would be (full frame...this was a crop camera though).
Most difficult of all, and also what I keep trying to do, is create a landscape shot that includes wildlife. Again, seldom am I able to do this with a wide angle lens.