Check that the money order amount is correct. Fill in the recipient's name.Fill out the money order at the counter with a retail associate. Pay the dollar value of the money order plus the issuing fee. To fill out a money order you need to first fill out the who the payee is, the purchasers information and sign it. Filling out a money order is a straightforward stepbystep process. Just follow these instructions and you'll be ready to send your money. However, the address you include should be for the person who purchased the money order. Don't forget the stamp! The money order has a purchaser section, which you'll fill out with your name and address.