Fill in the recipient and your address; for bills, include an account number; sign it; keep proof of payment. 1 Check that the money order amount is correct.Filling out a money order is a straightforward stepbystep process. Just follow these instructions and you'll be ready to send your money. Fill out the money order at the counter with a retail associate. Pay the dollar value of the money order plus the issuing fee. Find out if you can pay with a MoneyGram and then buy one. Write the recipient's name next to "Pay to the order of. Fill in the name of the recipient in the "pay to" section. Fill in the recipient's name.