A positive AA is important but make sure doesn't get too steep out front and raises off the plane by too much roll or flip. Bat tip stays down as the bat overtakes the hands in extension after contact while the hands extend slightly up. Bat stays below hands as long as possible.

A dangerous moment for swing plane integrity is when the hands overtake each other and barrel gets ahead of the hands. Bat tip should try to stay down on plane while the front elbow works up

A common error is rising off the plane too early because the top hand doesn't go past the bottom hand under but gets besides or even over it and bat levels out too early. This creates increasing AA out front. Some can't be avoided but can't be too much.