Office chair seat covers – Turn your office chair in a seat of inspiration after learning to sew a cover for an office chair – in a few steps. Cover the back of the chair and the seat, or just do the back by itself; with basic sewing skills you can make a case for your desk chair that will have all your coworkers feeling jealous. Office chair seat covers for President back, Add 1 inch to your height and width measurements, then cut two pieces of fabric weight home decor to match these measurements. Place the two pieces of fabric together with good sides, aligning the bottom edges you just hem.