Sounds like so much fun to do especially if it was your own. Someday I might be able to do it too. Not holding my breath but you have to have dreams! lol My biggest thing in my little room is lighting. My aging eyes are not what they used to be. I'm not old, 63, but my eyes are not good especially any dark fabric on dark. Another is lots of storage space with doors & not just shelves. Keeps the dust down. I have to keep mine now in plastic bins. No carpet is a must. A very large cutting table & a extra long ironing surface about 2-3 foot wide, a wall left open for a design wall or install one that pulls down like a roller shade. Also I would love to have more wall space just to hang some of my creations up so I can enjoy them & be inspired. Those are some of the things I would love to have if I was building a new sewing room.