Below, find a fill-in-the-blank template, as well a detailed example of a declaration letter. Keep in mind that court requirements and preferences vary.STEP 1: Complete the Domestic Relations Filing Information and. Final Disposition Forms. Apply online or print, fill out, and mail in one of the application packets below. Follow the instructions on filling out the application completely. "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. This article provides a comprehensive guide to writing a declaration letter for child custody cases, including a sample letter. This form is a sample doctor's letter that can be used to get a gender marker change on your driver's license or state ID in Georgia. You can file a petition for child custody in your county's Superior Court.