[click image to enlarge]
For this chair I used one-inch soft foam as my top layer of padding. I traced the shape of the chair frame onto the foam and cut it out. Here is where I had to start paying attention to details, because if I was sloppy about attaching my foam, my whole chair would look lopsided - and who wants to sit on a lopsided chair? No one, that's who. I had to staple the foam very slowly, working from top to bottom, so as to not accidentally deform my cushion shape. My arms were aching from holding the staple gun steady for so long.