I think I saw it on the internet someplace. Just someone mentioning crochet with VCR tape so I tried it.
I just make up the pattern as I go. It is really hard to put a lining in because you have nothing really to sew to.
The black & silver one that won reserve grand champion is the only one with a lining. I sewed it in by hand very carefully going around strands of tape and not sewing thru them.