From the acetate link chain
 From the faceted oval chain
 4mm rings
 A lobster clasp
 From the extension chain

To start, separate the acetate chain to keep 5 links.

The links separate easily with the slits located on the links. Slide the links so that the slits meet and slide between each other. This way, you can easily adjust the size without losing any links.

Measure your wrist and subtract the length of the acetate chain, then cut 2 pieces of faceted oval chains to that measurement.

Now pass the chain through the acetate link and fold the chain in half.

Then open a 4mm ring and insert the 2 ends of the folded faceted chain and the lobster clasp. Close the ring.

Cut an extension chain of about 4cm.

On the other side of the acetate chain, thread the remaining faceted oval chain into the link, fold it in half, and then connect it to the extension chain with a 4mm ring.

And there you go! Beautiful creation!