The Sons of the Harpy were an underground insurgency group fighting the rule of Daenerys Targaryen over Meereen, composed of former slavers. They took their name from the harpy, the traditional heraldic symbol of the slave-masters in the Ghiscari cities of Slaver's Bay, and the Ghiscari Empire before them. They concealed their identities by wearing golden masks with horned faces resembling harpies.(gameofthroneswiki)
Using the source file, I scaled it up, and printed in 2 pieces. I had sculpted a pattern on it with Blender.
The little guy I am holding is from here :https://www.myminifactory.com/object/sons-of-the-harpy-mask-game-of-thrones-7882. This was the inspiration.
The background is from the fighting pits in Mereen as Jorah throws his spear to save Daenerys.