Check the size of your 1/2-in. plywood backing board. Then, cut the fiberglass window screen to be eight inches larger than it in both directions (so there are four inches of overhang on each side).

You may have seen it in the pages of design magazines, or on Instagram, or perhaps just in the home of the trendiest friend you know: a wall that’s covered not with paint, not wallpaper, but a ...