Hanging questions

[Saraphin]

So currently my only available method is hanging I was going to do this over the door type hanging in full suspension. I do not have a rope or access to a rope, so I have tied the belt of a robe to a man's necktie and made slip knots at both ends. I thought I would put the robe end around the doorknob and the necktie end for around my neck.
my questions are:
do you think this will work will death be certain?
are there other reasons this could go wrong besides me backing out or The material failing?
should I put a plastic bag over my head as well? with this help or hinder?

any other suggestions

 

[Saraphin]

Anyone??? :)

 

[Rocky M]

Personally, I would not use the plastic bag unless it was for the exit-bag method, but that's just me. You'll want a second opinion on this though.