Cut approx. 35" of illusion cord.
Thread 1 onyx black round bead to the centre of the thread and fond them together.
The beads in this design aren't in a particular order, so it is up to you to design which pattern you would like. 

Thread 1 seed bead onto the right side of cord and two onto the left.
Thread the right cord through the second seed bead on the left thread, the opposite way. See image. 
Repeat this once more.

Thread 3 seed beads onto each thread followed by crossing both cords through a tube bead. (See image)
Repeat this until you have the desired length of bracelet.

Finish your bracelet by creating a loop of beads that will hook over the onyx bead to make a clasp.
You will need approx. 18 seed beads to snuggly fit over your 6mm onyx bead. 
Secure the loop with a knot or thread the cord back through the beads in the bracelet and knot it in your desired place for extra security.