Congratulations for getting it done.
Organizing my fabric was one of the best things I have ever done. I had large bins and had no real idea of what I had. So I bought the comic book boards and went to work. My bins are the file folder styles and clear. And like Juliasb, I have to go through every year or so to weed out the stuff I no longer like and wonder why I ever bought it in the first place, and put back fabric that somehow never got put back where it belonged. (No idea how that would happen.....) Also, sometimes I rethink my prior decisions - since I have several bins of just Christmas fabric, it had to be done in background colors instead of just by subject. But all my baseball teams in one bin while football has all other sports since I don't have as much.