Fill in the recipient and your address; for bills, include an account number; sign it; keep proof of payment. Fill in the name of the payee.Fill in the name of the recipient in the "pay to" section. 1. Fill in the payee's name. Put the payee's name on the line labeled "Pay to the order of" or "Pay to. Fill in the recipient's name. 1 Check that the money order amount is correct. So please make sure that you put the pay to. Fill out your money order using a black or blue pen and print clearly. Because money orders are prepaid, you'll need to pay for yours upfront.