Sometimes if the last watch face that was selected was one of the bottom ones, the task wouldn't be able to find the correct watch face.
This version scrolls all the way up before trying to find the watch face so it should always find it.
Now works if Android Wear app is already in the Watch Faces screen instead of the main app screen.
It checks if "Settings" is present on the screen. If it is, that means you're on the main screen so it presses the "More" button. If "Settings" is not present it means it's already on the watch faces screen so it just selects the watch face right away.