CP or Customization Points can be mostly earned from the action that are been done while playing the game. And the easiest way is by completing the match in less time, so that you can play a majority of the games. By any means if you die in the game early, don't be impatient and leave the game as you will be receiving a heavy XP around 500 while staying and not leaving the game. So this is the first way you can get some good amount of points without losing much. You can even have a chance of getting back in the game as Tommy, as he can arrive only after a person dies or escapes. And you will receive a heavy bunch of points for staying in game and the actions that you will perform being Tommy will give you more.