How to get Faces for Apple Watch (even though Apple won’t let third parties make them)
Apple Faces
Personalize your Watch face with some creative designs.
While Apple isn’t allowing developers to create watch faces for the Apple Watch, it is possible to personalize your Watch face with some creative designs.
AppleFaces is a website that features a number of designs that can be downloaded and are the correct dimensions to be used as a Watch face. They are even designed around where the clock appears on the face of the Watch.
instructions to customise Apple Watch
1. You need to download them on your iPhone in order to have them appear on your Watch. To install them on the Watch you need to add them to an album in Photos on your iPhone or create a new album, select the photos you wish to add.
2. Sync the album with your Apple Watch
Open the Apple Watch app on your iPhone, then tap My Watch.
Select Photos > Synced Album, and select the album that you have added the images to. Now the images will sync with your Apple Watch.
3. Enjoy your watch faces 😉
Source credit: http://www.macworld.co.uk/how-to/apple/how-get-watch-faces-for-apple-watch-3627444/