This is easiest when done in local multiplayer. See "Count of Carcassonne" on how to set this up. This does require a bit of luck, as you do need to get two tiles that have a cloister in the early part of the game. You need to place two tiles containing a cloister next to each other with your main profile player and place followers on both of them. Then you have to fill in the entire area around both cloister tiles to "score" them. This is not difficult, but you do have to be careful not to place tiles in a way that makes the cloisters unfinishable (e.g. place weird road or city pieces that require a specific tile to connect to them). Using both of your local players, you should have no problem finishing them.