One complaint: colour shown is not accurate, is much more brown toned which might not be flattering to all undertones. Otherwise very easy to use provided you follow the instructions! I was actually able to use the nail sheet *twice* as they give you quite a few sizes which are pretty malleable. So once the first set was ready to come off, I just used the remaining sizes to do it all over again. Lastly, I’d like to learn more about where they source their products and whether they follow ethical...