Gladly, here goes.....
What this effort has shown me is that I now need to work on the welt. Other than that, I am quite pleased with how these have turned out (so far).
I'm not the authority on the subject, but shell should be able to be buffed back to a high shine with no polish, even after a few years of wear. This is because of the natural waxes and oils in the leather. The thing that causes a shine is a smooth surface, so if you can bring out the oils on the surface, and make them smooth and even with buffing and brushing, you should not need polish. I don't think wax once a year is a bad thing, just not necessary to get a good shine.
They look great, good job! You will only get better with practice.