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Thanks for the advice everyone!
I agree that it doesn't look like it's kicking out as much and like the top layer is constraining, but I'm not sure why as this skirt has more godets (8 quarter circles instead of 6) than my past have had. I don't recall how many to the underskirt, somewhere above 3 full circles though. I think I will try adding some light purple ruffles under the darker purple ruffles on the godets (which get lost from afar anyway, the lighter purple underneath will bring them up more). What do you think about a purple boa along the bottom edge of the bottommost darker purple ruffle? It might add more weight which would help it fly up. I feel like the dress gets very staticky and that might be contributing to the constrained look.
I think an accent around the neckline would be a great idea, maybe some chunky stoning with some larger sew on stones and pearls to match the coloring of the moon?
The dress is very light as it is, the top skirt is all silk habotai and silk chiffon in various colors. The underskirts are silk organza. A boa would add weight and stiffness. The only question is, do I have enough boa? I was graciously donated a big bag of boas in a few colors and don't want to purchase new as they are quite expensive!I'd guess it's because of the different material weight combined with the static you mentioned. It also looks like your ruffle fabric is less stiff than typical - did you use tulle instead of crinoline or a less stiff crinoline? I'd definitely recommend adding more of something to the hemline, but I'd think you may want to stiffen it - your hemline is noticeably less stiff than the other dresses in the video and isn't getting the same kind of sustained momentum in spins, I think.
To fix the static, could you try lining the silks? I know that'd add even more weight and might not get the desired effect, but maybe it'd help keep the underskirts and top skirt from being joined together. I know it's possible to get a lot of movement out of a heavy skirt though, I recall Katusha having a very heavy looking fabric for her topskirt one year at Blackpool from the videos I saw.
Finish stoning, definitely decorate left arm with swirls from finger loop to shoulder in middle of sleeve line only, no to left hip decor (my personal taste)' instead of boa, think about adding loose, single ostrich feather quils that pick up the light color of your length ruffles integrated towards the bottom of the dressThe dress is very light as it is, the top skirt is all silk habotai and silk chiffon in various colors. The underskirts are silk organza. A boa would add weight and stiffness. The only question is, do I have enough boa? I was graciously donated a big bag of boas in a few colors and don't want to purchase new as they are quite expensive!