Wash the wound with water right away.
Use a knife to make a small cut across the wound.
Using your lips, suck as much venom out of the wound as you can, spitting it all out when you lift your head up for air.
Put the wound under hot water—as hot as you can stand—for at least half an hour. A full hour would be ideal.
Clean the wound thoroughly.
Apply antiseptic and cover the wound with a sterile gauze or some other dressing.