For this part you can use the top or bottom of the bottle (or both) depending on which you like better .
If you use the BOTTOM:
Cut the bottom off the bottle evenly all the way around about an inch think.
using the needle poke holes around the open edge of the plastic ring.You will hang a butterfly from each hole so use that to determine how many holes and how far apart you want your holes
Poke a hole in the center of the bottom of the bottle. Thread a piece of fishing line through this hole to hang the entire thing.
If you use the TOP:
Cut the pouring spout off. cut the top from the bottle to form a ring of plastic about 2 inches thick.
Poke holes around the wider edge of the plastic ring. You will hang a butterfly from each hole so use that to determine how many holes and how far apart you want your holes.
Poke 3 holes along the other edge to hang the entire thing. These holes should be evenly spaced around the ring. Thread one piece of Fishing line through each of the three holes, tie the three pieces of fishing line together in the center leaving at least one long piece to hang the entire thing from.