Write your address in the purchaser section. Include your account number if you're paying a bill.I'm gonna give you some brief information on how to fill out a money order. 1. Buy a money order for the desired amount. 2. Fill in the "Pay to the Order Of" line. 3. Fill in the recipient's name. It's similar to signing a check. You'll see a line for the purchaser's signature, usually on the front of the money order near the bottom. I'm going to show you how to quickly fill out this post office money order to use to pay somebody. A notice to bid is published in the legal notices of a newspaper.