You would need to put something behind it, thicker material, to back it ..as you sew into it and then bring in the other side.. either way you would ideally want to fold both sides to sew into..or you make like as if you were covering an eye hole with some extra material perhaps and it's going to look Frankenstein. Up to you. The 'no brainer' thing that comes to mind ..is you take it to an Auto Upholstery shop.
