Here are two more smallish sewing studios, one from HGTV and one from MpressiveThreadzStudio. And of course Tilly's idea to check out the photos on Flickr for Craft Rooms.
In the meantime, I'm not so sure I'll get the whole room after all...my great idea to add a bedroom basement and bath really isn't possible...or is it? Anyway, that tiny space may end up being a single bedroom (murphy bed back on the possibilities list) and a sewing room! Uh oh. So I'll need suggestions for even-smaller-space-sewing-studios! In the meantime, I'll give you a look at the room, which has no closet (there's one outside the room, across the hall), and only bi-fold doors. Of course it's got a window & a nice ledge for books & kitty.