Note to Petitioner: Please provide three (3) character references. Sample Format for a Character Letter.If you have been asked to write a character letter, this simple template may be a useful guide. "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. A character reference letter can make a difference in a child custody case. It provides evidence of your parenting abilities. A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. Sample letter to court from therapist. No, you should not mail the character reference letter directly to the judge. Instead, give the letter to the defendant's attorney.