https://finance.yahoo.com/news/apple-ios-13-update-183149561.html

If you want a more personalized look, you can use a so-called Memoji as your image as well.

Speaking of Memojis, Apple is adding accessories that let you customize your Memoji to look more like, well, you. You can add makeup, piercings, hats, glasses, and more. The Memojis and Memoji Stickers are accessible from your emoji tray in the Messages app. You can also use your Memojis in other apps like WeChat.