Dusty, the kits come pre-made and pre-sewn with all the piping, pleats, padding, etc. already in place.
It installs just like the Indian blanket seat covers from K-Mart except you fasten them in place underneath with the hog rings and pliers supplied with the kit.
If your old seats were more or less intact, it's possible to install the new covers right over the old vinyl.
Anyway, for the price, it beats paying an upholstery shop to do it.
Lay the vinyl out in the sun for half the day so it gets really soft and supple before you start.
I never did it before and was worried I'd screw it up. Nope. It actually went on faster than it took me to remove the old stuff - that's not how most auto repairs go.