Based on the provided reference, the method to string two necklaces together, specifically to create a layered necklace look, involves the following steps:
- Wrap one of the necklaces around your neck once.
- Clasp the ends of the necklace together.
This method, according to the YouTube video excerpt, results in a "perfect layered necklace that won't get tangled." It is a very simple technique, and assumes that the necklace length is suitable for achieving the layered look when wrapped once around the neck.
