Wake your Apple Watch by tapping the display or raising your wrist
Press firmly on the current watch face or touch and hold it
Swipe left or right to browse available watch faces
Tap the watch face you want to use
Tap Edit if you want to customize colors, complications, or style
Press the Digital Crown to save and exit
On iPhone, open the Watch app
Tap Face Gallery
Select a watch face
Customize it if needed
Tap Add to set it on your Apple Watch