I gave these stickers 5 stars as they are really colourful, well illustrated, very sticky (so they stay put!) and they are very simple to use. They arrive in a small package which means the sheets are curved when you first take them out but it was easy enough to rest them on a flat surface with a heavy box on top to straighten them out. I have put them on the bathroom wall which was tiled in plain white tiles and the stickers look absolutely fantastic on it. I'm so pleased with them and for the price I just can't fault them. It helped my little girl settle in and love our new home. Also some of the stickers have a smaller sticker with the name of the marine species on it, "Blue whale" for example. I hadn't expected this but it was a nice touch and entirely optional as to whether you use them or not.