Better Homes and Gardens has a sewing space organizers pictures that might be of some help to you to go and look at. The allpeoplequilt.com site (also better homes and gardens) has many room organizer tips too.
I thought of my sewing space like the kitchen .... The triangle, remember? You have cutting, sewing, and pressing to do. These need to have thier own items within reach, in a convienent order. Then you have the storage area (sometimes areas, if you also clothing sew).
I think what I am saying is. Break it down into tasks and then create areas, then it will come easier to you what goes where.
I hope this helps you a little.