There's no one answer to "I am". It's a layered, jumbled (sometimes contrasted) medley that makes you, you. Honour that, style with it, show it off.
mix and mingle it
Each pendant a piece of your puzzle. Slide them onto your chain, one by one, and mix them, match them, jingle them up.
layer up, get down
Candy those collarbones and layer up on necklaces. Start at choker length and loop it lower from there. Mix up your textures, throw in a pendant or two - whatever works to make it you.