Free template for a character reference letter for a DUI charge! A character letter plays a dual role."Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. Here's a guide on what to consider including in a character reference letter for a DUI hearing. Defend a friend or family member's moral character in court. Use our Character Reference Letter for Court template to easily write your document. Sample Format for a Character Letter. If you have been asked to write a character letter, this simple template may be a useful guide. You may give one or two examples to demonstrate this. I.e. A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things.