Diy Headliner Ideas . I sew from the back side to keep from trying to follow a 1/4 wide chalk line on the material side. Peel back the detached portion of the headliner to expose the roof liner beneath. American flag headliner Custom car interior, American flag, Truck diy from www.pinterest.com See more ideas about car interior, woody wagon, car upholstery. We used a tongue and groove style vinyl beadboard found at home depot. 4 yards of any fabric and 2 cans 3m super 90 spray adhesive.