Looking through these Spiderman Costume pictures will let you see some examples and give you some good ideas so you can decide what costume is best for you to wear on Halloween.
Here's an Amazing Spider Man 2 costume.
Here's a Spiderman costume for little kids.
Here's a muscle chest black Spiderman venom costume for kids.
Here's a Spider Girl costume for girls.
Here's a fat Spiderman costume for overweight people.