I like to start as low as possibly without tearing off my wrist. You'll know if it's too low. SOme bows like a mid or low 6" bh.

Then worko your way up. You'll find a spot where it's the quietest. Not only that you can tweak your arrow flight as mentioned however without the aid of paper or bareshafting you wont know if it's going left or right first. I atleast cannot pick it up that fast and dont see the point of trying. You'll end up doing more harm then good trying to watch an arrow right out of the bow lol.

I've found most of my bows like something between 6 3/4 to 7 1/2 for the arrows I'm shooting out of them. You can adjust it more or less as needed. You might pick up asbells instinctive shooting 1 book, it goes into some of this.