Okay... so for wallpaper you need to prep the wall with glue... this was amazing! Super easy to apply (I used a brush not a roller) and I was impressed how easy it was. I applied the pieces all by myself and thought it was simple enough.  Patience is key! I bought two for a wall, didn’t measure correctly and will be buying a third. Everyone who comes over and sees it loves it and is super impressed with the pop of color and dynamic print. Great buy!