Article in English: The best way to sterilize the needle before using it is with flame. Hold the needle over the flame of a candle or a lighter until it glows. Make sure you hold the other end with tongs, or you'll burn your fingertips. Once the needle is sterile, wrap it in cotton thread.  Start about 1⁄8 inch (0.3 cm) away from the tip and wrap the thread back and forth about 1⁄4 inch (0.6 cm) up the needle until the thread has formed an oval shape. This will absorb some of the ink as you dip your needle into the saucer. Dip the needle into the India ink and then poke it through your skin, leaving a small dot. There may be some blood after several layers of poking, but there shouldn't be much.  If blood is dripping/excessive, stop immediately and sterilize. Hold a clean paper towel, not cloth, onto the tattoo until it stops bleeding . Stay inside the line of the tattoo design you've drawn, filling it in with tiny punctures. Use a cotton swab or a rag to wipe away any blood or excess ink. The skin may swell up a bit as you poke it which may cause the resulting tattoo to appear spotty. You may have to do touch-ups when the swelling goes down if you want smooth lines throughout the tattoo. Wait to do touch ups until after the tattoo is completely healed, which can take up to two months. When you finish the tattoo, wipe down the area with soapy water. Throw away any remaining India ink in the ink cap and needles. They are no longer sterile. Use a new needle and a new saucer of ink if you plan on doing any touch-ups in the future. Avoid cleaning a fresh tattoo with alcohol -- use soap and water, instead.

Summary in Chinese:
对纹身针进行消毒。 开始纹身。 沿着画的线开始纹下去。 清洁纹身部位。