Gotta love the mystery of fly names. I was expecting a heavy dose of “chrome” (eg, flash) with this one but the name must have another origin.
A good drop of UV resin on the wingcase might be nice. Add to the durability and also give the wingcase some depth while still showing off the Peacock Sword.
If you want to keep the fuzziness of the peacock sword wingcase, instead of putting resin on top put a very small amount of super glue on the thorax before you pull the wing case over.