Best way is to get the seat out of the car and to remove all the trim panels. Then you should be able to get to all the clips and whatnot that's holds the cover on. As far as what holds it on the topside being a ford it prolly has a mixture of hog rings and Velcro. I do a lot of heated seats and takes me 2-3 hours roughly depending on the vehicle.
Bama 93 race tune, bbk o/r xpipe, gt500 axle backs, frpp k-springs, steeda rear lca's, 3d carbon 3d500 wing, boss/cs front fascia w boss brake cooling kit, plenty more...