Instructions
Look at the "Player" sub-menu in the main menu of your team to view the specific button combination for a celebration for a specific character. Different characters can perform different celebrations, and while the button combinations themselves are not that different from player to player it can still save time to know what button you need to press ahead of time.
Press and hold the "R1" button on the top-right side of the PlayStation 3 controller. All celebration styles on the PlayStation 3 version of the game, regardless of the player.
Press the other button on the controller that you need to press for the celebration of the specific character you're controlling. Depending on the character you may need to press one of the shape buttons (like square or circle, for example) a single time or twice to perform the celebration. You may also need to use the left or right directional stick. If you are not sure what button you need to press, quickly try pressing them all until you find the one required for the character you are controlling.