Downloadable template and sample letter to a judge. Below, find a fill-in-the-blank template, as well a detailed example of a declaration letter.What parents and witnesses need to know about character reference letters to the court for child custody. Includes a downloadable sample and template. This article provides a comprehensive guide to writing a declaration letter for child custody cases, including a sample letter. "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. A declaration letter for child custody is a statement presenting your evidence and insights regarding your child custody case. This guide will take you through both of these processes, guiding you on which forms you need, how to fill them out, and how to start the filing process. How do I write a letter of support for custody? This form can be attached to form FL-300 in requesting a specific schedule for custody and visitation in California.