How to fill out the Trust Amendment Form Instructions and Guidelines? 1. Gather all relevant information about the trust. 2.A trust amendment form is a legal document you use to make changes to your revocable trust. It isn't meant to change your trust document as a whole. Bexar County Certificate of Trust Form. Fill in the blank form formatted to comply with all recording and content requirements. A notarized legal document that identifies the buyer and the seller, describes the property, and accomplishes property title transfer. Downloadable forms for eFiling, Divorces, and Suites Affecting the Parent-Child Relationship, Child Support, Hail Claims, Legal, LegalEase, and Passports. For a free version of Acrobat Reader, please click on this logo. Complete list of Texas Comptroller Property Tax Forms and Applications click here.