my thunderbird had some pretty terrible door panels that the fabric was ripped and coming apart so i decided to recover them with black cloth.
Step 1: what you need
1: a door panel, preferebly 2 that you want to recover. thunderbird door panels are a single sheet of cardboard so they work very well to recover. this may not work on all cars. its up to you to figure out if this method will work or not.
2: cloth, my door panels used 2 yards of cloth and 1 yard of backing per door.
the cloth you choose should be tough yet easy to work with, i went to the local crafts store and wandered around til i found the one that i thought would work well, its a fairly heavy black canvas and as a backing i used fleece.
3: spray adhesive, 3m or krylon permanent spray on adhesive
4: razor blades, at least 2 brand new sharp razor blades
5: duct tape
6: sharp scissors
7: clean wire brush
8: clean place to work.