How To Write A Letter For Partner Support . The following step by step guide will help you draft an effective letter: The parties herein were married on ________________. Business Partnership Announcement Template from littlestarblg.blogspot.com File as many letters as you can and, seek paid professional help before you file the spousal sponsorship application. Identify the research project by name/title. You and your spouse have been together for 2 to 3 years.