If at all possible, practice from a stand--any stand. Get on top of the house (be safe!) if you have to.

I hunt with a 66" longbow, and you have to get familiar with it. Be sure that there are no limbs in the way before you shoot, and if you have a rail in front of you put your legs against it so you won't have to worry about clearing them.

Being that high up can be decieving--it will make the target look farther away than it actually is, and most of us tend to shoot high for that reason. If the deer (or whatever) is 10 yds. from your tree, it's 10 yds--no matter if you are on the ground or 25' up.

No amount of advice will be as good as actually practicing that shot. If nothing else, try to take a couple of blunts or field points and shoot before you climb down--a little practice is better than none at all.

Chad