"Gets one's face" can be used to describe either a physical or emotional action, meaning that there are a variety of antonyms to describe the opposite of this phrase. In terms of physical actions, antonyms could include "turns away," "looks down," or "avoids eye contact." In an emotional sense, antonyms might include "acts indifferently," "remains apathetic," or "shows no reaction." The opposite of getting one's face might also entail actively showing interest, empathy, or admiration towards another person. Ultimately, the antonym of "gets one's face" depends on the context and connotations surrounding the phrase.