Everything you need to write a declaration letter to the judge in your custody case: an example, a downloadable template, an outline and tips. This guide includes forms and instructions for a letter and affidavit to request that the court register an out-of-state custody order in Texas.If you've been asked to write to the judge, use our sample character reference letter and fill-in-the-blank template. What's a character reference letter? In Texas, where I live and work, writing a letter is not enough. Fill out the demand letter template with your information and sign the letter. Make three copies of the letter. This article provides a comprehensive guide to writing a declaration letter for child custody cases, including a sample letter. It is not customary to directly write letters directly to the Judge. I strongly recommend against doing so.