Fair enough. But yeah, post a pic or two of the setup, it'll be far easier to help out that way.
It's a combo of a few things, really - practice with the right technique, the right length string, the right type of string and a surprising amount of nerves. The first time you brace a really heavy bow it's a bit nervy, you need to do it a couple of times before you stop worrying it's going to blow up in your face.