Looping serves is a bit more challenging than many players imagine.  However, if you follow the right thought process and use the right technique, then you will be on your way to major improvement.  Here are some steps…
 
1. Watch the opponent’s positioning at the table and body language to possibly see if he will serve short or long.
 
2. Next, watch his backswing, contact point, and where the ball contacts his side of the table.  At this point, you need to start adjusting your feet while keeping your hand in front.