Effective details for the description of person include:

A、Everything about the person should be described.;

B、Every detail about the person's physical feature that is relevant to the plot and theme of the story.;

C、Every detail about the person's mental feature that is relevant to the plot and theme of the story.;

D、Every detail about the person's soial feature that is relevant to the plot and theme of the story, like career, family etc.