Flip it over again so you can see the back of the shirt and the stretcher. Now we're going to do the corners.



One at a time, stretch the corners taught. This is where you'll need to use the stapler with one hand, or have a helper. Staple on one side of the fold, then the other, while holding the shirt taught.



Follow the images and fold the corners toward the center of the stretcher, then staple on top of that. Note: This is where 3/5" staples will come in handy. Mine were 1/4", and I had a hard time getting them through all the fabric. A hammer helped.