Note to Petitioner: Please provide three (3) character references. Character Reference Letters and Letters of Recommendation are useful in defending an Orange County DUI case, as prosecutors and judges use them in court.If you've been asked to write to the judge, use our sample character reference letter and fill-in-the-blank template. What's a character reference letter? A character reference letter can make a difference in a child custody case. It provides evidence of your parenting abilities. Writing a character letter for a judge can be a daunting task. Here are nine essential tips for writing an effective sentencing letter. Sample Format for a Character Letter. If you have been asked to write a character letter, this simple template may be a useful guide.