Amazfit Watch faces

Hi everybody. Any procedure to create or modify GTS watchfaces not too complicated by May 2020? All I've found on internet are very complicated or programs don't work.

Thank you in advance.

Try this:
viewtopic.php?p=5109#p5109

Thank you. I found it yesterday late in the night. The problem was that initially I couldn't make it work because I didn't have windows 10, but I could try yesterday with one pc with win 10 and then it worked. Thank you so much for the answer.