RE: Missed deer at 2 yards. How???
Your form is very critical on those shots. If you do not bend at the waist you can hit high.
With correct form though those shots can easily be missed low.
it is a shot that needs to be practiced.
On another note - the target is very small at that angle and IMO is a low percentage shot. Always better to let them get out and away from the tree
Good Luck