For the future, I would love to see a scoring rubric before and/or after the competition. It would be great to see where the points go beforehand to better focus my work. Afterwards, it would be really helpful to see what areas need the most improvement. I would also love to see a more diverse judging panel.
This, especially the last part. Being judged on your non-fabric costume by a group of talented seamstresses = feels bad, man. I was talking with a few other people whose costumes were primarily armor-y backstage after Masquerade walk-ons, and there was a general sentiment of having shown up at the wrong competition.