The first picture shows workroom fabricated panels that were poorly constructed. One can see how the side hems pull up the edges while the hem sags along the floor.

The fabric is linen and can stretch with heat and humidity changes. The following two pictures show the incorporation of the "lock stitch" method, a standard fabrication practice by Windows Redefined. Note the effect on the hemline of the panels: it is smoother and the panels hang more professionally.

The 4th picture shows when wide flat trim is machine sewn onto the leading inside edge of the panels: the panels twist at the edges which is known as "bias twist" in the drapery industry. When a proprietary workroom technique of Windows Redefined is employed, the leading edge hangs straight and the trim is smooth and viewable.