We can already use AR Emojis on WhatsApp from the Samsung Keyboard, but they get sent as an image (if they're still) or GIFs (if they are in motion). You should consider adding a feature to add AR Emojis to WhatsApp as sticker packs, so we can send them as stickers. WhatsApp already supports both still and animated stickers so there should be no issue. On iOS it is already possible to send Memojis (or how they are called) as proper WhatsApp stickers.
