Huh, I've checked, and I think it's an AO3 bug? I'm assuming you posted to the TRB art collection at first, which is unrevealed? And then you removed your work from it, but it's still unrevealed... I can't see an option to reveal your work right now from the mod side :( Can you delete your fic and post it again maybe? It's a workaround, but I can't think of anything else.
As I know there can be issues with viewing your own fic when it's unrevealed, this is the link: http://archiveofourown.org/works/11736522
And this is the right collection to post to: http://archiveofourown.org/collections/CapIronMan_TinyReverseBang2017

I'm sorry for the issues, but so happy to see you take part in the event!