First time jitters

So - I just posted an Avengers (well, really Tony & Bruce) story. It's a long one. I'm a-skeered.

http://archiveofourown.org/works/438739

Please tell me what you think.

I like it, of course, it being my baby. It's likely pre-slash, definitely not slash right now, and full of both funny and dark.

Two notes:

(1) NOT my characters. They all belong to Marvel. I ain't trying to steal them and am just having fun.
(2) Some pretty graphic abuse scenes.
(3) I welcome any and all feedback.

And - that's it. Please spread if you think someone you know would like it.