10/1/2020: Finished year 7 (!), with continuing gratitude towards this amazing community. Based in St. Louis, MO. Regular worker-bee and self-taught photography dilettante....
Very cool homage to the original. yours is very close, I think -- definitely seems to be an agave. The main difference to me is that hers has a stronger contrast. I like the way you've captured the form here...will have to check out the challenge.