My collections I organize together, all my batiks together, then the rest are organized by color. The flannels and baby type fabrics are organized together too. As I tend to purchase a bolt of the neutrals I like so well, I have all the bolts organized by color or collections if I have enough of them. My apparel fabrics are also organized by type of fabric verses color......silky, satin, linen, wool, etc. I still have some in plastic totes as I ran out of room to put them onto the shelves.