Here's a couple pics of it (it's a bit dusty, having languished in the closet for a couple of years):
I just basically unevenly-scalloped the edge with a pair of scissors.
Here's a couple of me sportin' it....I made this as a Halloween costume several years ago, so it's not 100% authentic...but, it helped me to whet my interest-whistle in the history of the GAoP, and I've been lurking here for a while now, learning all I can....
Rob