Start with plenty of 26-gauge wire, and anchor wire to one side of arc connector. Add 4mm beads and extra lashes between each bead. Finish off the end with additional anchor lashing. Tighten anchor lashes with pliers.
With 22-gauge wire, create a wrapped loop beaded connector to attach crescent link to chain. Be careful when tucking in the wire tails, as the 2mm beads are easy to accidentally crush with pliers.
Divide chain in half and attach clasp with medium jump ring. Attach a larger jump ring on other half of chain, to hook the clasp into.