Stormtrooper Helmet - lenses

Okay, first thing i'm addressing here are the lenses. As i'm ultimately going for a Sandtrooper, i need MUCH darker green lenses than supplied.
Asked around on the Forums and finally got an A4 sheet of 3mm acrylic that was just right - but far too thick to bend.
Got round that by cutting a shape the right width and height, then heating it up over the hob till it went floppy then pressed it into shape inside the helmet.
When cool, it gave me a nice band of the stuff.

I've Velcro'd it in place so as to aid ventilation, but also it means i can change it at any time without any hassle.