Thanks guys, I can't express how happy I am with this costume and the display - I've fixed a few issues with it and am now starting on a Leeloo display
I was actually admiring pictures of your costume just a few moments ago, one of the most accurate replicas I've seen. Very well made

if you would like some close ups of the original for a few of the details, let me know
There's no real trick to how I get them to stand un-aided really, I use Eco-friendly mannequins, so they're recyclable materials and extremely light weight, so the heaviest part of the costume (generally the boots) holds them nicely in place! - though it doesn't work so well for costumes with helmets I'm afraid!