Use Memoji on Apple Watch

With the Memoji app to add a new one.

Tap each feature and scroll the Digital Crown to choose the options you want for your Memoji. As you add features such as hairstyle and eyewear, your character comes to life.

Tap The Memoji app on Apple Watch showing the Nose editing screen. There’s a close up of the face, centered on the nose. The word Color appears at the bottom.

Go to the Memoji app on your Apple Watch, tap a Memoji, then choose an option:

Edit a Memoji: Tap features such as eyes and headwear, then turn the Digital Crown to choose a variation.
Create a Memoji watch face: Scroll down, then tap Create Watch Face.
Return to the watch face and swipe left to see your new Memoji watch face. The watch face is also added to the watch face collection in the Apple Watch app on iPhone.
Duplicate a Memoji: Scroll down, then tap Duplicate.
Delete a Memoji: Scroll down, then tap Delete.

Apple Watch User Guide

Use Memoji on Apple Watch