Grasp the long edges of the dollar bill in either hand and turn the dollar bill so that it hangs down.
Slide your fingers to the top of the bill.
Fold down the top about 1/4 inch and press the edge down to make a crease. You can fold the dollar either toward you or away from you. Working in the same direction as your first fold, continue tightly folding the dollar bill until you reach the bottom.
Slide one end of the folded dollar bill under your G string, below the bridge. Slide the other end of the bill under your E string. Push the bill toward the bridge to get the effect of having an actual mute.