So glad to see this!
Sandman is easily one of my favorite series, and I'm going to be working on a Delirium costume soon (easy enough, as I already have stuff that could work for her as part of my regular wardrobe). I would love to do Desire, but I just don't have the body type to pull it off. I would love to do Barbie, too, with the checkerboard makeup.
Yui, your Morpheus is unbelievable. I have never seen a better Dream cosplay that I can recall.