How to make a teardrop shape Killer Klowns hammock?

I want to know how to make a teardrop shape hammock so I can turn it into a Cotton Candy Cocoon from the movie "Killer Klowns"

Needs to be teardrop shape & once I put the pink colored cotton sheath over the rope / hook, I can zipp up the cocoon to my head like in the movie. :D

Picture of How to make a teardrop shape Killer Klowns hammock?