Think about it... it takes time
- to come up with an idea
- to draft that first scene
- to edit
- to work through those revisions
Well, it also takes time on the other end of the spectrum. I have said this before, but it is always a good reminder. Editors and agents are often reading manuscripts on their free time AFTER work and not during work. Even when they do get to your manuscript, they might want to read it two times. At some places, there are outside readers. And then, even after all of that, the editors need to sit around and discuss the projects that caught their eye that week.
And then there is the issue of placement. If there is no slot for that book, your manuscript might be put on hold, or more likely, just end up being rejected because it "wasn't strong enough." That simply means that your writing was not strong enough to bump one of the established authors out of a slot.
Now, I do have to add one note to this (and here comes Scott's rant). I do not believe it takes an extrodinary amount of time to see something we don't like. Along the same line, I do not believe in the stall tactic that I believe many people in today's world use - that of not answering an email or a phone call when they don't have an answer or have been lazy about getting around to a project - works.
Wow, where did that come from?
Anyway, things will take time. In the meantime, you need to get back to your writing instead of sitting around and watching the mail box or your email.