I love this creative piece of artwork! I noticed a couple reviews mentioned that they had some issues with it sticking to the wall. I have had mine up for almost 2 months with minimal issues. When applying any sort of stickers to any surface it really helps if you wash or wipe down the surface first (and wait for it to dry completely), because if there is any dust (or liquid) at all it can make the adhesive ineffective. Our biggest adventure was assembling the wolf, because he is the bulk of the sticker and is in two parts. I would really advise two people to place the wolf, one piece at a time. The rest of the stickers are easy peasy.