I dislike harsh reviews but here I am writing one, YIKES. 
This wall paper just didn't like the wall. We overlapped the edges as described by the instructions, we expected there to be some shrinking and expanding just not the 1/2 inch gap that never really expanded back to even a 1/4 inch let alone the overlap. Then there was the falling off the walls saga -- there wasn't a day that went by that I didn't have to press a panel or corner or an edge or even the center back down. Today, I finally admitted to myself that the wallpaper wasn't working and took it down. I'd be relieved if it weren't for the sticky film left behind -- ON THE ENTIRE WALL. I have no clue how to get this sticky residual mess off the wall.