Contrast is key for any black and white photo, as you want the whites to be bright and the blacks to be dark, but you (probably) also want to have all those middle-grays as well.
Contrast is key for any black and white photo, as you want the whites to be bright and the blacks to be dark, but you (probably) also want to have all those middle-grays as well. Beginning photographers sometimes tend to boost the contrast a bit too far in post-processing, so be wary of overdoing it.