Oh you haven't RUINED it.. you grew it for 2 months and 23 days, yes? You're going to get a harvest, yes? That's success in my book! Autoflowers are finicky about a lot of things and obviously they are not everyone's cup of tea... But you've done well to get her to this point. She's starting her fade but I don't see any brown pistils on her yet... Give her a little more time...
Good luck!