Instructions to make this rope gag

[Gumballs]

i apologize if this is the incorrect forum for this thread but i believe it to be the most appropriate after looking at the content of all the others.

i have attached a couple of pictures (unfortunately they are not very large) of a rope gag that is being used on a female. As i have never seen this before i would be rather interested in learning how to correctly make it. Any help would be greatly appreciated.

Thanks!!