Good lighting! I agree with the other comments about staff and such, but I do feel that a deep dark shop is not for me. I don't like it when you have to almost go outside or find a window to see what color something is.
A nice assortment of fabric. I don't know what your area has, but starting out with an assorment and then finding your clients nitche(spelling).
Good luck and good for you for going for it.
