After full installation, the ceiling film must be subjected to the final heating over 15-20 minutes, then check the room well.
It’s time to turn for the help of previously made marks on the floor. With the help of a laser or trying on a plumb line, probe the stretched canvas and mark with the marker the exact center of the lamp mounting. Then you need to lubricate the ring of the lamps with glue. These rings should be glued on top of the film, the marked points should be exactly in the middle.