Help please (psychology)

To make an etching the artist first coats the entire printing plate with an acid-resistant substance called a made from beeswax, asphalt, and other material. the artist then draws on the coated plate with an etching needle exposing the metal. next the plate is dipped in the plate is removed, the waxy coating removed, and the plate is cleaned, inked and printed.

What purpose do the elements of art serve for artists and those who view artworks?

What is the main element that sets western art criticism apart apart from that of the rest of the world