Yes, I think this thread's about run its course, but I'm going to add one more post.
I think that HCB is correct when he states that framing a picture has to be intuitive. In street photography that's certainly true. You simply don't have time to set everything up according to the "rules" of composition. You have to see the picture in its entirety and react to it without thinking. It's less obvious that something like landscape photography requires the same kind of intuitive reaction, but one thing I've observed in 56 years of active photography is that if you're shooting landscape, or, say, an abandoned farmhouse, even though you may make a series of exposures, the first one more often than not turns out to be the best picture. That's because what you shot first was what you saw that made you stop to shoot the picture.
For most people it takes years of experience to get to the point where photographic composition is intuitive. It takes a lot of shooting and cussing when, as HCB says in another context, you look at your results and see where you went wrong. I suspect there are naturals out there who get it right from the very beginning, but I've never met one.
The other thing it takes is a thorough familiarity with the work of the masters: people like Eugene Atget, Jacques Henri Lartigue, Henri Cartier-Bresson, Brassai, Andre Kertesz, Paul Strand, Gene Smith, Robert Doisneau, Manuel Alvarez Bravo, Walker Evans, Dorothea Lange, Chim, Robert Capa, Elliott Erwitt, Helen Levitt, Ansel Adams, Edward Weston, Robert Frank, Steve McCurry, and others I've left out of this list. When you find a master whose work moves you, you'll probably try to copy that work. In the beginning there's nothing wrong with that. That's how we learn -- same way some of the great painters learned by copying the masters who went before them. Eventually, though, you'll begin to find your own style. That's when it all comes together and photographing becomes one of life's most satisfying experiences.
In the long run, winging it just doesn't get the job done. You need to work at it and learn to compose in your viewfinder. That's where the picture either comes together or doesn't come together. Post-processing can't salvage a badly composed photograph.