In return for painting my Sheild to look battle damaged as it appears on the Captain America: The First Avenger DVD, my client/friend Billy asked me to make the rose for his Ruby cosplay.
He would supply the Rose detail and the bullets, the rest was up to me.
Thankfully, with a bit of adjusting for the length the belt I had already made for my Cap costume worked for him too! It is made of black Vinyl and held together with Rivets.
The spare ammo-clip pouch is made from silver vinyl and can hold a 3DS or a guys wallet.
My client/friend used Nerf darts painted silver for Crescent Roses (Ruby's scythe/high impact sniper rife) bullets. I had none on hand but did have a small screw driver who's handle was the same circumference of a Nerf dart, so I used that for the spacing/sizing of the bullet loop-things, and then sewed them down.