want to put the ring around both of them at the same time.
it may bend it out of shape just slightly, but that's okay. it will mostly snap back into shape once it's on.
slide the little ring onto the bigger ring.
if you want to girly it up a bit with a second little ring with a pearl, this is also the time to add that. for this i used a ring that could be bent open with the pliers, put a pearl (from a broken bracelet) on it, and closed the loop back up with the pliers.
then because it was such a tight fit with my ring on the washer, 