Choose your filigree and finish if necessary (see other posts on how to color brass). Take a pair of flat nose pliers and grasp the filigree in the exact center. Finger fold the metal downwards to form a U. Bend the ends together and slide your chain through. A small jump ring will go through the bottom filigree and attach your pendant.
Customizing your own bail adds that extra touch to your design that makes it OOAK. The connector I have used here is one of my staple piece - I use it as a lengthener and bail regularly - Check out our etsy shop - we carry this Celtic connector in antique gold, antique silver, brass ox and raw brass (Yes - we love it that much!)
This necklace is available at Winter Rose Cameos.