About 2 meters ×4 meters of fabric, first of all, two people cooperate to cover the fabric in different parts, according to the arc of each part of the sofa, reserved for sewing edge (can leave more points, prevent cutting is not in place, leave more can be sewn in, leave less sewn out of the sofa cover will be pulled), one part, one part to cut out a variety of shapes of fabric, You just sew it together at the end. I do not know what your sofa style is, roughly need to cut out after piece, back piece, seat piece, front piece (front piece below can also add a lotus edge), two side pieces (if there is a handrail then have to cut a few more pieces), two side pieces of cutting is the most important, must be cut according to the bending shape of the sofa, pay attention to the top position on both sides of the back to discount, The exact length depends on the curvature of the sofa. Then when you sew, you should first sew vertically and then sew two sides, so that the sofa cover is beautiful. If you use floral cloth and gingham, you should pay attention to the good pattern.