WordNet sense 1 (a word picture of a person's appearance and character):

portrait, portraiture

WordNet sense 2 (a representation by picture or portraiture):

depiction, depicting, portraying

WordNet sense 3 (representation by drawing or painting etc):

delineation

WordNet sense 4 (acting the part of a character on stage; dramatically representing the character by speech and action and gesture):

characterization, enactment, personation