I usually win tie breaks so my tid bit of advise is to think of the tiebreak as a mini-set with each point counting a s a game. Make sure you concentrate on every point but if u have one or two errors dont let it get you down remeber that you can also get those two points back rather quickly. Dont forget what got you into the tiwbreak. Most ppl tend to play completly different when they get in the tiebreak causing them to play more hesitate b/c its not their usual game style and that forces them into more mistakes. You have to go in with a rather positive outlook and heck if your losing the tie breaks anyway just go for your shots and dont worry about it!
Princess of Power: Serena Williams
21 time grand slam champion, Tours best fighter, Olympic Champion
Queen of Grass: Venus Williams
7 time grand slam champion, Olympic Champion,
The Tour Standard! .... still haha!