Any easy way to find out if I am negative or positive AoA ?
I play ball about 3 inches inside my left heel and tee ball up at 1"
Aside from stepping into a Sim or on a LM were there are numbers to work with, you have to gauge and trust your ball flight as an indicator of AoA. Definitely use impact tape on the face to see the exact contact the ball makes and change it often as you move the ball around in your stance. In both cases look for contact about 1/4" -3/8" above center.Put two yardsticks on the ground intersecting at 90*. Peg your feet position on the yardstick with a tees opposite each toe.
Slide the other yardstick along at 90* to locate the ball. Take notes .
If you don't have a hip slide(lateral shift) then your setup at 3" inside the heel and only 1" height you are typically set for a level sweep at the lowest point in your swing arc. A slight hip slide will make that a negative AoA. The more hip slide, the more negative it becomes.
The ball flight of a negative AoA is often a low riser that peaks and drops with minimum roll on a flat fairway.
The flight of a positive AoA is typically more ballistic.