Where on the wall should I hang the first piece of wallpaper?

Answer: Start point will be the midle of the wall or room

Answer: I like to work left or right grass cloth I tend to start in the middle

Answer: Depends....In a bedroom find the best place for the pattern not to match up when you are finished...behind a door in the corner is good. If the pattern is large you may want to center the wallpaper on the focal wall and work out in both directions...