An alphabeticalbytopic list is provided below containing information and downloadable PDF forms, when available, or links to external resources. A trust amendment is a legally binding document designed to modify one or more provisions within your living trust.This set provides coverage of every aspect of probate law and estate and trust administration in Texas. It includes sample forms and letters. In general, Texas has very few official legal forms. This is why you will not always find a free fill-in-the-blank form for your situation. For example, in a living trust it is common for the grantor to be both a trustee and a lifetime beneficiary while naming other contingent beneficiaries. This contribution will be in the form of: ' a.