How to lose games!

Serve really hard.  Lot's of balls will go into the net or over the baseline.

Step into the court after your, or your partner's, serve.  Your opponents will enjoy making deep return shots and watching you reach back to try to hit the ball that lands behind you.

Stand in the playing area to receive a serve.  Pretty much the same as the suggestion above.

Return serves hard.  This causes lots of hits to go into the net or over the end line and gives you less time to get to the non-volley line so you're still trying to move in when the ball gets back to you.  You get lots of chances to hit balls at your feet this way.  If you return the serve soft and deep your opponents have to let the ball drop before they can hit it,  You could actually win the volley. No! No!

Aim "kill" shots at the side lines.  One of the really great ways to lose points!Often we miss the lines for a fault when a softer shot in the same direction but nearer the middle of the court would work just as well.  As the ball goes out of bounds yell "Darn, I just missed"

Rush your shots when you have the time to make a controlled shot.  This causes all kinds of mistakes.  Your paddle make contact with the ball at all sorts of angles. They won't know what to expect next.

Stand close to the center line.  You can take a good shot away from your partner and you leave the outside area of your court uncovered. When your opponents hit he ball into that open space yell "Nice shot!"

Stand close to the side line.  This leaves the middle of your court open and makes you vulnerable to the dreaded center-line shot.  Your opponents will love it.

Snap your wrist on overhead slams. A nice follow-through helps control the ball but we don't want to do that do we? A lack of follow-thru and the slightest mistake in timing can cause the ball to go awry in almost any direction. 

Poach.  Though a good shot at times this leaves your part of the court open for return shots to the space you just vacated. Your opponents will drool over all that open space.

Put lots of spin on a lot of shots.  They're harder shots to control and people are waiting for them. Be sure to stand in one place and admire that crazy bounce.

Play catch, hit the ball right back to the opponent who hit it to you instead of making them reach for it. They'll never know you did it on purpose.

Lift your eyes as you swing at balls near your feet.  A common fault that makes it more difficult to get your paddle at the correct angle, or even make contact. And you usually look pretty good doing it.

Watch where you are going to hit the ball.  Like the item above, this adds a third element to hand-eye coordination and greatly reduces the probability of making a good shot plus your opponents will know where you're trying to hit it.

Back peddle to return a hard hit toward your feet.  No one can consistently make  controlled shots when moving backwards and you can't get into a set position before the ball gets to you.  Watch out though, if you trip and fall backward it could be very dangerous.

Hold your paddle low, below the waist.  It's very hard to get your paddle into position when you have to raise it quickly. Great for driving the ball out of bounds at all angles.

Stay back from the non-volley line.  This leaves lots of room for your opponents low shots and even if you get to the ball you are moving.  You can hit the ball with more control when you are stationery so play back near the base line and give your opponents lots of room to place their winning shots.

Don't be patient at the non-volley line. When you are faced with a dinking game end the rally quickly, commit a fault, and let them have the stupid point.