Gain psychological advantage. Penalty is rather a mental war than a physical contest. The side with psychological advantage has bigger chance to win. This is proven true on the quarterfinal shoot-out between Netherlands and Costa Rica.
Netherlands coach Louis van Gaal replaced starting goalkeeper Jasper Cillessen with substitute Tim Krul, which gave Costa Rica kickers the impression that Krul could be a specialist on penalty, but he actually had no remarkable performance during his club career. Addtionally Krul told every Costa Rica kicker that he knew where they would shoot, which created more pressure to Costa Rica shooters. The change proved successful. Krul secured Holland a semi-final place.
To summary, a successful penalty involves practice, analysis, strong nerves, mind-games, confidence and some luck. May the semifinal Fifa 15 Coins teams good luck when they come to penalty shoot out. All information at http://www.cheapfifa14coin.com.