Explain why you feel you deserve leniency. Dear judge (name), I am writing to ask for leniency in the sentencing of my husband, because (then give all your reasons and speak only from your heart).A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. How should you start a leniency letter? Wondering how to write a character letter for sentencing? Following a few simple rules to writing a great letter. The core of your letter should explain why you believe the judge should show leniency towards the defendant.