I ordered these because I am a renter and didn't want to paint or wallpaper someone else's walls. My initial plan was to line them up side by side, to form a continuous design like wallpaper. It wasn't difficult to do, but not all of the stickers matched up exactly and it accentuated any inconsistencies in wall construction (old house, not exactly level walls, but you can't tell by looking unless you are trying to put perfectly square stickers on it!). My second attempt involved just spacing the decals out evenly over the entire wall and it turned out great. My room looks really good. I saved the paper backing for when I need to remove the decals. Now placing the decals back onto their backing so that I can move them somewhere else, THAT will be the hard part!