Club-Face Lie Angle and Swing Direction

Above pictures are three typical style of impact position of the club-face with different lie.
Imaging if a golfer swing back and hit the ball while the face is "too upright lie", the club-face
actually is aiming to the "left-side" even hit on the sweet spot. In another hand, if "too flat lie"
then the ball will actually going to the "right-side".
Lie angle incorrect at impact might caused by few different things or combination of them.
1st) Posture ( Too far away from ball = Too upright Lie)
2nd) Length of Club ( Club too short = Too upright Lie)
3rd) Swing Path (Swing from Out to In with Club-Face Open = Too upright Lie)
4th) Lie Angle Incorrect (The Club-head Lie Angle Off angle)
PS: Please dont tell me you think a club-head made by piece of metal can keep its shape forever............

To check how you made contact with the club. You can goto a local professional clubmaker who has the equipment to test your club. Make sure the club that you use has the right angle for you.
Otherwise, it is almost waste of the time to practice at all.
A club with a right lie angle made for you can always make your game more consistent.