My "lightbulbs":
Neutral grip............
Twistaway.....
Lagging clubhead takeaway.....loose shoulders...
Axis tilt & "left shoulder up" to "hit it".......
...
Nowadays:
Trace more outside with backswing. (sometimes with steeper shoulder turn)
"Swing more left."
(after so long of focusing on delaying my release, tilting, working my pivot, creating speed, and compressing it I am back to trying to trace a plane line that points more left)
...
With putting......eyes over the line..........bent over like Jack.........trace straight plane line...