We mounted the skull by attaching a piece of wire horizontally to the back. Depending on how heavy the skull is, you can either hang it like a traditional picture, or find a stud and screw into it using a wood screw. Another option is using drywall anchors where you can't find a stud. Tip: Use tacky putty in inconspicuous areas to stick the skull and the frame to the wall so if it gets bumped, it won't move. Thank you and good luck!