Learn How to install custom watch faces on Huawei Watch GT/GT2/GT2e/GT2 Pro, GT3 ,GT3 pro, Huawei Watch 3 & 3 pro
Watch this video for better under standing..
If the downloaded theme (Watch Face) has “.zip” extension, then simply remove it and make sure that it has “.hwt” extension left. Otherwise your file wont work in your watch. For example if the downloaded Watch face name is abc.hwt.zip than rename the file name and remove .zip from the file and use abc.hwt in the watch otherwise file will not work.