Have for the affixing of the many items about 15-20 minutes. Used without any auxiliary materials and am quite happy with it in the end. Unfortunately it sticks really bad in some places, so I einbisschen then hurried along with the hair dryer did (what but rather lay here on my wall, because it is not really smooth). It looks entirely of super beautiful and looks good on a white wall. For simple student apartment there is enough perfectly and saves you repaint the room toil.
For the price you can not really complain, but it really is not recommended to buy the stickers as a gift, because there is really waiting for an eternity it;) So I bought it but for their own use, I am more than happy with it.