Adjustable medium / large dress form. this fully adjustable dress form allows for pattern adjustments before cutting, better fittings, and the ability to work fabrics. Walmart. shop every day low prices from the largest retailer in the world, all while getting cash back! take advantage of our selection of walmart coupons, special. Stitching tips. how do i stitch on very dark fabric? how do i block a canvas that has gotten out of shape? how do i block my needlepoint if it does not need to be washed?.