Choose your guitar strings based on your personal taste. [2] X Research source
Secure the ball end of the string against the underside of the bridge to sustain tone. Do not let the ball end sit on the tip of the pin or it will work itself loose.
About 2 inches from the corresponding machine head, cut the string so that you can poke it through the machine head shaft.
Make sure you do not drop the guitar.
Twist in the opposite direction for high strings on 3 + 3 headstocks.
The string will give as you stretch. Repeat the process until the string no longer slips. Remove excess string with wire cutters once you’re satisfied with the stretching.