File an "amended petition" to add something to, or withdraw something from, the original petition. Have an attorney look over your amended petition.A court with continuing, exclusive jurisdiction may modify an order that provides for the conservatorship, support, or possession of and access to a child. In order to amend the original complaint you would need to file an amended Complaint if you initiated the child custody action originally. Filers in Dallas County can now e-file an Uncontested Divorce Without Children and Adult Name Changes through Guide and File! If after hearing the motion the court finds that the. 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. You can seek modification. You can get this before the court on an expedited basis.