I'm a little stunned by how enormous my series bible for THE BETTER PART OF DARKNESS turned out to be. I'm usually my own worst critic, but I'm really happy with the world I've built and the characters I've created. It took a long time to go through the manuscript and cull details for the bible. This is a good thing, though. It tells me that I've woven my world facts and details into the story versus a lot of info dumping, which is never a good thing.
Having all these descriptions and facts in one place is going to be way helpful as I work on Book 2. Consistency is the key. I want my world and characters to come to life and the reader to always feel like, when an old character reappears in subsequent books, that it's like visiting a friend, someone they've come to know and can envision easily. If one of my guy's skin naturally smells like faded cologne and cedar, then it needs to smell that way in the next book. And sometimes as I speed along in my writing I might forget little details like this. So having a bible is a great way to keep me true to the characters and the world of Underground Atlanta and beyond.