Free template for a character reference letter for a DUI charge! "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide.Character Reference Letters and Letters of Recommendation are useful in defending an Orange County DUI case, as prosecutors and judges use them in court. First, it is there to showcase your credibility as someone who knows the defendant well enough to speak on their character. 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. A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things.