These ceiling tiles are quite easy to work with. I used them to put up in my guest bathroom. Living in an older home, the corners are going to be less perfect. Measure twice, cut once, as my grandpa always said is what I abided by installing these. I advise purchasing them with keeping in mind having 2 or 3 tiles extra as I made mistakes. Trial by error. . In the end, I was very happy with the results!