I removed the wallpaper in my bathroom. It was original to the house (25 years)and the wallboard was only primed. I have sanded the surface removing any imperfections and filled all holes. The wall was never sprayed with what my wife calls the "little bumpies" and she would like me to spray them on. I have an airless sprayer but am unsure of what product I should use to get that "new home" look to my drywall and what further steps I need to make in prep.