You can file a petition for child custody in your county's Superior Court. If you are divorcing, the petition will be included in your divorce papers.A summary of the procedures involved in filing for child custody in Michigan, including links to forms. In most situations, you can file for custody in the "home state" of the child. It is in the best interests of the child(ren) to dismiss the motion. FindLaw links to state-specific family law and child custody forms for DIY legal proceedings. Learn when to hire an attorney to help with family law issues. The following are various forms and policy explanations related to Friend of the Court cases as well as links to other useful information. You should respond with an answer and counterclaim for child custody. Responding allows you to clarify anything and tell the court what you want.