You do not need an extra piece of fabric, no matter how large the damage! The patented process involves applying one or two layers of clear adhesive to fill in the damaged spot. Then you mix to match the proper color and apply it onto the applicator screen...the screen is placed over the clear adhesive and lightly moved back and forth, thus dispersing the color fabric fibers over the adhesive. Let the repair dry. We give you everything you need in the kit to do a truly professional repair! This kit contains; 7 Fabric fiber colors, 2 fabric adhesive, spatula, mixing bottle, screen applicator, color matching guide, and complete instructions.