To maintian your good finish, get formation training (which I do acknowledge you are seeking) from a pro - no half measures here. Your retired RAF types are the place to start. This is something people think you can just go and fly, but there are techniques, and in particular disciplines, vital to keeping it safe. Best to find a trusted partner, and go as a team. This is certainly something which is best done with someone you've trained and particed with.
It's lots of fun, and I highly recommend it, but good training as required.