Very good post. Like most of the posts I have been seeing on YTalk, when you think about it these ideas should be common sense. They are so simple. They have been proven to work. However, the skills take work to master. And it is good to be reminded of the "common sense" when you're blinded by enthusiasm. It will save so much headaches later on.
I have been scripting basic outlines, and then trying to wing it. I find the more I write the easier winging it becomes. Even if I stray from my script a little bit it puts me at ease in front of the camera knowing that I have thought it out. It also saves editing time... and lessens the number of needed jump cuts.