Aiming the body (feet, hips, shoulders) and the clubface so they work together toward the target.
Misaligned shoulders are one of the most common, and most invisible to the golfer themselves, causes of a consistent push or pull.
Where the ball sits relative to your stance, from just inside the left heel (driver) to the center (short irons/wedges).
Whether your feet (and by extension, your body) are aimed left of, right of, or parallel to the target line.
How far the hands are rotated on the handle, usually checked by how many knuckles of the left hand you can see at address.
The forward bend from the hips and the amount of knee flex at address.