Matt, you're doing fine!!! Just like Jo Ann said, you did everything properly, and Mann and Cia all gave wonderful advice. You should be given a plaque for being a model first-time author. Here is a list of right things you did (as I see it), so you know exactly what you did are right:
You announced your story (in status, in forum, and in chat). You encouraged readers interaction (to review and to discuss your story). You showed you care about your story (why should anyone care about the story if the author him/herself doesn't seem to care?). You followed GA guidelines and utilized all the nice resources GA provided for you (i.e., editors, beta readers, promotional tools). You did all of the above with a positive attitude. And with this post, you showed you want to be successful, and I believe you will (not just as an author, but as a person).
It's easier to repeat a mistake than to replicate success, so to me, number one thing is to review this: what did I do right?. I hope this helps. Sometimes it isn't so obvious, perhaps it's because it's so natural to you, but they are nevertheless important.
Just be patient. You're on the right track and success doesn't come overnight, so just keep doing a good job. I believe in you.