Last updated on 18-Feb-2012 08:28:01 AM
Hi NagaHarish,
The key is to make sure that you have your technique correct. Then you just need to speed the stroke up. So get from the start to the finish of the stroke a little quicker. You can also go slightly more forward to get as little more speed.
You have to make sure you are getting a brushing contact to maintain the spin on the ball.