Did you have a hard time being consistent with it? And how did you keep it organized?
I found it confusing to read, even to myself at first, but after a time I decided to write it like a story instead of like a quest journal. That is when the idea really came to frutition for me. 327 pages before his untimely death at the hands of a Tiefling Warlock. The book was recovered by his adventuring companions with a few more pages tacked on to describe his demise. It was really a lot of fun to write!
As far as organization a string of cliff notes during gameplay and then the full-fledged writing whenever the inspiration and words struck me. Doing it this way consistency never seemed to be an issue.