Free template for a character reference letter for a DUI charge! Tips: Keep the letter honest but positive.Avoid downplaying the seriousness of the DUI. Sample Format for a Character Letter. If you have been asked to write a character letter, this simple template may be a useful guide. Defend a friend or family member's moral character in court. Use our Character Reference Letter for Court template to easily write your document. A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. Character Reference Letters and Letters of Recommendation are useful in defending an Orange County DUI case, as prosecutors and judges use them in court. Filing a Lawsuit (Plaintiffs).