I've been using 3M General Spray adhesive and It holds really well.
As for how, I've been cutting and tucking, but I keep getting litter tears from tugging too hard. lol
I looked all around today at 5 different fabric stores and couldn't find anything...
I think I'm going to try to special order the SVT seat cloth from an upholstery shop. That way it looks more factory. I'm starting to realize that the vinyl just dosen't look right since that color/texture isn't anywhere else in the car.