The antonyms for "draw picture" would be "erase picture" or "delete picture." If someone drew a picture they didn't like, they may choose to erase it or completely delete it from their computer. Alternatively, if someone intentionally wants to get rid of a picture they drew, they may choose to erase it or delete it altogether. In any case, these antonyms represent the opposite action of drawing a picture. While drawing involves creating something new, erasing or deleting involves removing something that already exists.