Click Done.
You can have Messages share your name and photo automatically, or prompt you before you share them in a new conversations with your contacts automatically.
Always Ask: Messages prompts you for each conversation, verifying that you want to share your name and photo.
Note: When you share your name and photo in Messages, your contacts are prompted to update your contact card in the Contacts app. They won’t see your new information until they do.
Go to the Messages app Create your Memoji in Messages on Mac