How Lie Angle Affects Your Ball Flight
The lie angle is the angle between the shaft and the sole of the clubhead. It can be either flat, correct or upright for you.
The correct lie angle is determined by many factors such as height, arm length, leg length, grip, posture and so on.
When It's Too Flat
If the lie angle is too flat for you, you will tend to hit a push or push slice. If you start to avoid push or blocking the shot to the right, you will tend to hit a pull slice or a pull.
If you are much taller than average person, you might want to adjust your clubs more upright.
If the club is too flat, the toe will touch the ground first causing the clubface to open a bit.
When It's Too Upright
If the lie angle is too upright for you, you will tend to close the face as you strike the ball.
So you will tend to hit lots of hooks or pulls.
If you are much shorter than average person, you might want to have your clubs checked at a golf store.
Toe down Effect
When you swing a golf club, the toe of the club drops a little through impact because of the centrifugal force.
This is called the toe down effect.
So when you sole the club at address, the toe of the club should be little off the ground to compensate for the toe down effect.
If you sole your club with the toe of the club touching the ground, you will hit the toe first as you strike the ball causing the clubface to open a bit.
So make sure when you sole the club, the toe is little off the ground at address. This will let you hit the ball more solid.