Light a candle. Place it in the kitchen sink.
Set the paper you wish to burn on the kitchen counter. Wet a small paintbrush. Paint a border about 1 inch inside the outer edge of the paper. The water will help stop the paper from burning if it actually catches fire.
Pass the paper back and forth through the flame. Do not allow the paper to actually catch fire.
Remove the paper from the flame. The edges of the paper will appear red and begin curling as they blacken. Allow the paper to burn to the desired look.
Drop the paper into the sink. Snuff out any remaining glow with your fingers. Leave the paper in the sink until you are certain there is no possibility of re-igniting.