With an open small ring go through 4 closed large rings and close the ring. Add another small ring through all of the 4 rings in the same place as the other small ring. Arrange the rings so you have a 2-2-2 pattern.

Continue to add links by taking an open small ring into the 2 large rings on the right, add 2 closed large rings, and close the ring. Add another small ring in the same place. This chain needs to have 8 large links and 7 small links.

Starting on the left take an open small ring and go through both large rings from the first link and both large rings from the 4th link, making sure the chain doesn't twist, and close the ring. Add another small ring in the same place. With an open small ring go through both large rings from the 5th link and both large rings from the last link, making sure the chain doesn't twist, and close the ring. Add another small ring in the same place. This makes the basic pendant shape.

The decorative helm chain rings are now added around each of the small ringed links. These decorative rings don't go through any rings. They go in between the 2 large rings and they go completely around the 2 small rings. Starting with the central small link take an open large ring and go up between the 2 large rings on the left of the small link, take the ring around the 2 small rings and back down in between the 2 large rings on the right, and close the ring.

Keep adding decorative rings until all of the small ringed links have a large ring going around them. As you add these rings the pattern fills out and it becomes more difficult to fit them in and close them. Chain nose pliers can make it easier to close the rings. Always double check that the decorative rings haven't accidentally gone through any of the large rings in the double links.