Hello, this is David Cho here
I am goint to explain how to fix a drive slice
First of all, please check your grip first
It should not be 'a weak (slice) grip'
which causes 'open club face' at Backswing
Neutral Grip is fine,
but I'd like to recommend 'a bit strong grip'
The two lines between your index finger and thumb
of both hands should point at your right shoulder
Secondly, At the takeaway position,
The club face should be parallel to your spine
and avoid 'Cupped left wrist' at the top of Backswing
In general, Flat left wrist means
'square or a bit closed club face' at the top of Backswing
and 'the transition'
if you try to rotate the club face
straightaway from the top of backswing
your downswing path will be too steep
So, please apply this wrist action at 'the transition'
Lastly, after making sure all the key points
from the set up to the transition
approaching to the impact with hips rotation,
Please make sure to rotate (supinate) your left arm
so that you feel
the back of your left hand points at near the ball line
your shoulder turns too quickly
comparting to your arm rotation
So, stay still with your shoulders until arms drop
After you get the right timing,
you don't need to think about your shoulders
Thanks for watching