I always use the drop down 2 x 2 panels when I do drop ceilings. When cutting an edge, I make a cut all the way through for the edge of the panel. Then I come in from that edge aprox. 3/8" and make a cut with a utility knife (sharp blade) aprox. 1/4" deep. Then I place the knife on its side and cut into the edge towards the partial cut I just made. You should be left with a 1/4" reveal to match the other three sides. It isn't that difficult and once you get in the hang of it, it becomes second nature.