What two things must a person know before attempting to gather information form a work of art?

 What to look for and how to look for it are two things a person must know before attempting to gather information from a work or art.  Considering these two things are essential to be able to maximize time and effort during the gathering process.

 

 

What do you mean by this?

Iwould say overhead, b/c front would shine in their face, and might mess up the picture, especially if taken by a so either front or overhead, but i'm leaning towards overhead