What you need:
1 18 inch chain (the chain I got already came with a clasp on it)
1 24 inch chain (this chain didn't come with a clasp)
2 pendants that go together. I chose a bird and a tree.
A pair of Needle Nose Pliers
As for the pendants, again, make sure they "go" together. I chose 2 pendants in the same metal color with them same theme (nature). I chose one small one and a larger one to help balance the necklace out.
On your longer chain you'll take the very last link and pry it apart a little bit and attatch it the the link on the other chain. Do this on both sides.
(fyi... I didn't take the second picture, I found it online somewhere. I could not for the life of me, get a good picture of a link pried apart!)