It's hard to go through everything you can do to make yourself hold better. I think the most important things to holding steady are using good form, so your back muscles take the weight rather than your arms, and not trying to hold steady so much. If you try to hold the pin rock solid on an object, you'll waver all over the place. But, if you have solid form, and a weight you can handle, you'll hold well as long as you let everything do it's thing. Let the bow float and aim itself. Don't aim the bow! Just look at the target, focus on it, and let your hand eye coordination bring the pin to the target and let it float. When your pin drifts off the dot, or the aim point on a deer, don't try to force it back, just let it naturally drift back.
Be calm, mentally and physically, use good form, and you will hold well.

NOTICE: I have a great head cold going on, and it's 12:30AM. If this made no sense, I appologize.

peashooter