You can change many home screen settings, such as the watch face.
Hard press the watch face.
Slide your finger left on the screen.
Press the add icon.
Turn the Digital Crown to see the different watch faces.
Press the required watch face.
Press Add Face.
Press the Digital Crown twice to return to the home screen.
Slide your finger right or left on the screen to change between the watch faces added.
Turn the Digital Crown to change between the different designs.
Slide your finger left starting from the right side of the screen to see more customisation options.