What happens next?

How to hire a wallpaper hanger
Find a reputable wallpaper hanger.
Ask family and friends for recommendations. The people with whom you are closest will be the most honest with you about their experiences with wallpaper hangers.
They will tell you which wallpaper contractors were the most professional and which did a substandard job. Find wallpaper hangers by asking contractors you have used for other types of jobs for their recommendations.