The bridge in snooker is very important and offers a major part to ensure the delivery is made correctly.
It is formed by placing your hand firmly on the bed of the table,with the fingers parted then raise the knuckles keeping the fingers straight and the bottom of your hand firmly on the table. Bring the thumb up and across to form a vee with the index finger, for the cue to pass through.
Your bridge is so critical, that even the loose skin between your thumb and index finger has to be down below the vee to prevent the skin causing a drag effect on the cue, which can cause deflect from it’s intended path.
The most common mistake is not using your raise and lowering your hand for certain shots. Many local club players raise and lower the butt when the bridge hand should have been adjusted.