Sample Format for a Character Letter. If you have been asked to write a character letter, this simple template may be a useful guide.The character reference letter for court serves the purpose of offering the Judge insights into the Defendant's moral or mental attributes. This letter of reference is for Jane Doe who is seeking expungement of a misdemeanor larceny charge. A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. How do you greet a judge in a letter? The letter should include the name of the court your case was filed in and the case number at the top right. Put the caption (St. v.