Well let's see....half of it should have carpet to be warm for the winter and the other half (sewing and cutting are) should be wood flooring since it would be easier to clean and you won't lose too many pins in the carpet.....
Make sure on the carpet are you have a nice couch or comfy chair for you to sit and relax with some applique or hand work with a tv in front of you... Also don't forget to have a huge cutting table that is at least 4'x8' (hubby can easily make it with material from the hardware store)....
hmmm...let me think what else...oh don't forget to hang you favorite quilts all over the walls so every direction you turn you will feast your eyes and feel proud :-D
ok i think this is enough for now :-D