Write your address in the purchaser section. Include your account number if you're paying a bill.Fill in the recipient's name. 1. Buy a money order for the desired amount. 2. Fill in the "Pay to the Order Of" line. 3. Sign the money order where it states – "Signature," "Purchaser," or "Drawer. " Do not sign the back of the document, that is for the recipient to sign. 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. You have to first obtain a Marriage License and then have a Marriage Ceremony in the City Clerk's Office or a Marriage Ceremony outside the City Clerk's Office.