Amazfit Watch faces

How can I transfer the watch faces offered here to my Mi Band 9?
I read that there is a modded Mi Fitness app.
Where can I download it?

Hi, you can install watch faces on mi band 9 through my application https://play.google.com/store/apps/details?id=mi.band9.watchfaces
I have added mostly all ...

Can someone please provide me the image of watch face which is to be replaced and its folder name ?

will it work if I replace the image as well?
Will the new image be shown?