The given themes are limited. How can I add more themes to my Honor 8?
There are quite a number of themes shared by the people in the Honor community. You can download them which come with the .hwt extension, and put them in the HWThmes folder of either local storage or external SD card.
After doing so, the themes will show up in the Themes app.
Also, you can also search for themes for Honor phones running EMUI on the Internet.