The other day I said that I felt like I was doing something wrong at the most basic level.
Well, today I decided that I was correct. There are were two things that I was doing which were just incredibly wrong. I am now trying to correct those things, but only time will tell if I'm successful.
First, my left hand should never ever ever ever be used to support the guitar. My left hand's sole purpose is to form chords. If I feel the need to support the end of the guitar with my left hand, then I'm doing something wrong. I'm out of balance somewhere. My left hand needs to be completely unencumbered, so that it can reach all of the strings easily. Supporting the guitar with my left hand is a distraction at best, and a total hindrance at worst. Usually, for me so far, it's been the latter.
Second, strumming should be about 95% elbow action, and only 5% wrist action. This particular problem is a little harder to describe, but I'm still sure that I'm right. It has to do with how and/or if I hit the proper strings when I strum, especially on my upstrokes. I'm working on this, but it's proving to be really tough for me.
It's fun for me to pretend that anyone cares about this crap.