Unlocking Mythic Tier Transmogs

Hi guys, I am trying to unlock the Monk’s red belt from the Mythic tier set. What would be the best way to get it? I am not an expert raider nor do I usually do Mythic dungeons, although I do have some PvP Experience.

What would be the best way to unlock the appearance? If I understood correctly, If I convert a Conquest PvP belt in the ZM Tier Converter it would not swap appearance to the tier set right?

Thank you in advance!