How do you make people in photos look like shadows?

Question

I've been wanting to take some photography art. And one of the things that I like about the art is that the people in the photos look like shadows...which to me increases more of the symbolism in the photo. Steps, tips, anything to help, would be very very helpful!

Answer 1

If there is a light source coming from behind them and not in front of them according to where the photographer is standing will make them dark in the photo.

Answer 2

thats a nice example of a silhouette Leah  

Answer 3

Do you mean like transparent? Or silhouette? Or just black & white apparitions? Or actual shadows?

Define your idea a little better and maybe someone can help.