Stick bows need a little more wagon room up in a brushy tree stand, but one figures that out in short order.
When I miss, I tend to do so low, but I think that's because I'm peeking and dropping my bow arm to watch my kill, I mean miss. The advice about leaning forward is important, and to do that, you need to feel secure up in the tree. Be safe.
I like lower heights, 8-14' mostly, for better shot angle. And I like to be standing up, as mentioned before; I feel it allows me to shoot a wider angle.