I strongly recommend you do not use wall paper when dressing to sell – unless you have a very expensive show flat/ house to sell a whole complex. Walls should be off white, but not magnolia nor stark white either. I personally do not like feature walls when staging. It is much easier for the buyer to add their own personality to the property if you give them a blank canvas once they move in.
The Home Stager however needs to bring in the interest and colour through the wall art, cushions, bed throws and ornaments. All of these can be removed, but they are essential to create the WOW factor.