If you only buy one book about designing and organizing your sewing workspace, THIS is the one you should get. This is the most thorough, authoratative guide I've come across. The author, who has a background in kitchen and bath design and remodeling AND sews herself (she's even written a book on serging home dec projects) walks you through absolutely everything you need to think about when you plan a new or improved sewing space. There is a handy Inventory of Needs checklist, a form for recording your body measurements for ergonomic planning purposes, and a nice overview of how to do a scale floorplan to work out the most efficient layout for your space. Black explains how to set up efficient U-shape and L-shape work stations to maximize efficiency. She also explains how to do a full lighting plan for the space, covering options for ambient, task, and accent lighting, and explains how wall and surface color choices affect how much light is reflected from surfaces -- and that wall color actually tints the light reflected from the wall, so that you won't be able to view colors with as much accuracy in a room with pistachio green or hot pink walls, for instance. Some of my favorite specific storage ideas were creating 3" deep recessed shelves between drywall studs (on interior walls) for serger thread cones and incorporating pull-out "bread board" style landing areas to the right and left of your sewing station.
This book includes lots and lots of big, full-color photos of very different sewing rooms, and includes a floor plan for each one. In the back of the book, the author even addresses the specific needs of specialty sewers: quilters, professional dressmakers, and drapery workrooms. Whether you're blessed with a large room dedicated to your sewing or trying to make the best use of a corner or closet, this book will help you to use your space wisely and efficiently.