A good grip is to hold the cue with the thumb and first finger. The other three fingers just support the cue. I have written “The Grip” to help players improve the fundamentals in developing a good grip.
The first finger and thumb form ‘The Ring’ and this is 80% of the entire grip. The strength of your grip in the address position should be only firm enough to stop the cue sliding through your hands. It is recommended to have your grip hanging down vertically from the elbow
If you naturally turn your wrist inwards or outwards from the body while cueing straight this is not a major problem because with practice you can develop this kind of cue delivery. There should be no movements in your wrist other than the forward and backward motions on the line of aim during your delivery. The most common fault for players is to grip the cue too tightly.
When you commence your follow through your elbow should drop on impact as this will improve your timing with the elbow, arm and hand all work together.
The little finger should initiate the opening of the grip as if the grip is too tight or does not open you will automatically lift the butt of your cue off line. Allow your knuckles to move up and down during your cue action as this ensures the grip opens and closes properly during delivery. Remember the main aspect of the grip is to deliver the cue in a straight level line along the line of aim.