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 article provides a comprehensive guide to writing a declaration letter for child custody cases, including a sample letter.I am a fit and capable parent and otherwise qualified to have sole legal and physical custody of the child(ren) and act in the best interest of the child(ren). "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. What are your reasons for wanting a custody change? Can you explain them clearly? What parents and witnesses need to know about character reference letters to the court for child custody. Includes a downloadable sample and template. Do you need to file a Child Custody Affidavit? Learn how to process it and how to file for temporary custody from this article.