Free template for a character reference letter for a DUI charge! A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things.A character letter is designed to show support for a defendant in a criminal case. These letters have the potential to influence the court. "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. Tips: Keep the letter honest but positive. Avoid downplaying the seriousness of the DUI. I am writing this letter on behalf of a former student of mine who is presently before you on criminal charges and is due to be sentenced shortly. Defend a friend or family member's moral character in court. Use our Character Reference Letter for Court template to easily write your document.