Although Tari used 6x6-inch prestretched canvases as the foundation for this project, you can use any size for your wall art. Cut fabric 1-1/2 inches larger than your canvas on all sides. Wrap excess fabric to the back of the canvas frame, pulling it taut and smooth. Staple to the frame beginning at the center of each side and moving to the corners. Miter the corners and secure with staples.