A character letter plays a dual role. Sample Format for a Character Letter.If you have been asked to write a character letter, this simple template may be a useful guide. A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. Write the date and the judge's address in the top left. What parents and witnesses need to know about character reference letters to the court for child custody. Includes a downloadable sample and template. Defend a friend or family member's moral character in court. Use our Character Reference Letter for Court template to easily write your document.