Pretty easy to put up and look great! Be warned- they stick to themselves (if you layer) VERY well and can cause wrinkles if you try to move them. They stick ok to normal painted dry wall, but on warmer days sometimes the corners are peeling up when I check my daughter’s room.
A chain store sells a cheap version of these but these are better. You get a large one which looks impressive on the wall. They have remained adhered. I agree with other reviewers who said to have 2 people put them up is ideal but I did put them up myself with success. I would not hesitate to buy again.