Press the Digital Crown to open the Home Screen.
Press and hold the current watch face.
Tap the Edit button, if it appears.
Swipe left or right to browse available watch faces.
Tap a watch face to select it.
Tap Add to create a new face (if shown) or Customize to change complications and settings.
Use the available controls to choose options and complications.
Press the Digital Crown to save and return to the watch face.
To switch quickly without editing, press and hold the watch face and swipe left or right to choose another face, then release.