A square cut is played to a ball which is short in length on the off side . The back foot plays a vital role in the execution of the shot. To cut well, judgment of length, timing and flexibility of wrist are very important. Look at how well Ricky Ponting brings off the shot, sometimes with both his feet off the ground to pack greater power from the weight of his body.
Get the bat up high so that it comes down on the ball.
Don't jerk your head in any effort to get a lot of power into the shot.
Meet the ball at the right time. The best cut shot is the one that uses the pace of the ball to send it on its way to the boundary.
Let your right hand control the execution of the shot. Use all your wrist power to guide the ball into the ground.