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.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. Fill in the recipient's name. Use this form to replace your Green Card. This webpage is your comprehensive resource for understanding and navigating the housing contract process at UC San Diego. View a sample "Application for Original Contractor License.