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.State your name, relationship to the child, and briefly mention the reason for writing the letter. 2. 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? Fill out the demand letter template with your information and sign the letter. Make three copies of the letter. You DO NOT write the judge. This would be considered ex parte communication. File this form when you and the other party cannot agree to a temporary arrangement for parenting, child support, or other issues before the final hearing date.