The phrase "get one's face" can refer to the act of arriving at a location or facing a situation. Antonyms for this phrase could include "departing," "leaving," "evading," or "avoiding." Alternately, if the phrase is taken to mean the act of confronting a challenge or conflict, antonyms could include "submitting," "yielding," or "surrendering." In either case, choosing the most appropriate antonym will depend on the specific context in which the phrase is being used, as well as the overall tone and meaning of the larger text.