Okay, folks, I'm going to open up and tell you a secret.
When it comes to watch repair and modification, I have no idea what I'm doing.
If you follow my directions for even the simplest task, there is a good chance you'll end up destroying your watch.  Or puncturing/slicing/drilling/smashing/ various body parts causing them to bleed dramatically. Or both.
Therefore, I'll find instructions that are so easy even I can follow them.  These, I'll post.