What I find works pretty well is to assign someone a full video (something with a relaxed deadline, but with a deadline).
Then go through the video with the editor, and make a laundry list of things to fix, effects to add, teach them how to do whatever they don’t know how to do, then let them go do the next edit. Then do it again. After that process, I can see big improvements.
That’s how I was trained at my job 11 years ago – except I also had to figure out the online edit bay while cutting the project. Nothing like adjusting subcarrier phase with a client looking over your shoulder!
Mike Cohen