<human>:  How do I sew a button on a shirt?
<bot>: First, thread a sewing needle with thread that matches the color of your shirt. Next, knot the end of the thread. Insert the needle under the fabric close to the button and come up through one of the holes in the button. Push the needle down through the second hole in the button and come up through the same spot where you began. Repeat this process 3-5 times, depending on how secure you want the button to be. Finish off with a knot at the back. Trim the end of the thread to complete the process.