It was a lot of fun! In one way, it was just amazing that we were able to get all 15 of us together in one place to take this photo. There's 2 Canadians and 1 European in the group, and only a few 'natives' of Atlanta (though Oromë and Vana are married in real life, so there's that!) There turned out to be a lot of accidental coordination between the spouse/sibling pairs, so it was cool to see how everyone else interpreted their characters. Ulmo's costume was 'crowdsourced', which meant people who live in different places made pieces of it, and then when Nax arrived, he was simply attacked with shells and voila.
I realize that my 'recreation' only looks a little bit like your artwork, but I did put copper on the cuffs, headpiece, and belt (not shown!), and tried to keep the 'veiled' motif throughout. The only part I copied exactly was the sleeve detail - there is a solid panel with an open teardrop at the top coming down to a point underneath, with a chiffon bell oversleeve gathered at the cuff. And I tried to keep your pleated/gathered look in the cutout on the chest, which you can't see because of the veils, of course!
We plan to do this again next year in a different venue (so with maybe some characters swapped out), and if so I'll wear the 'right' veils and belt next time, and maybe improve the neckline so I can trim the veils to reveal a bit more (slicing down the face as in your artwork for the chiffon layer, at least, and with lace on the back only.) and I will likely improve the cuffs and belt a bit, but we'll see.
One 'level up' for me with this costume was actually sewing chiffon into particular shapes (to make the sleeves) and beading (which I didn't really do, but will say I sorta attempted , at least....well, there are some beads, anyway!) I think the part I am most pleased with is the effect of the overlay on the skirt, and the choice of floor length hemming (which I will really regret when I have to wear those 3" heels to walk on gravel/soft ground next year!)