All good advice. Let me add to what Bill said about deer reacting to sound on those close shots. I too think about that exit spot and then I aim just a tad lower precisely to compensate for what I have observed over the years and that is that in many cases they will start to crouch just as they begin to leap away if they hear the shot or see the movement. By aiming just a little lower than optimal as discussed above I find that I normally hit them just right on these close shots.
Lastly, I may have missed someone else point this out, but don't forget to bend at the waist when you shoot. If you just drop your bow arm and are still standing up straight you will shoot high every time. Practice from the stand is the key.