It comes slowly if you keep trying. I started my watch obsession with vintage Omega as well and at that time I had not even the thought that I might learn how to work on them. Start with cheap watches, even Seiko is good for practice, broken watches, pocket watches, but things of no great value, because you will break things, we all have. Slowly you will learn, then suddenly you will catch yourself competently doing something you never dreamed possible. I am no watchsmith. We have some very, very talented ones here, but I am definitely not one of them, I’m just a guy who enjoys messing about with watches.