Love the look of this wallpaper.  Def need 2 people to do this and match up panels before you cut.  I made the mistake of assuming the pattern would match up on each roll.  Tip: don't use a squeegee it burnishes the paper making it look shiny in places.  Use a clean eraser for a whiteboard instead.  I had to make make many patches because my walls are not straight but I was very meticulous matching up the pattern and you can't even tell!