Once you have your template, you’ll be able to use any photos you like but to create a collage template in the first place, it’s useful to have some images to hand. These steps will quickly get you up and running, however.
Lightroom isn’t perfectly set up for creating collages and a few parts of the process require jumping around a bit.
Organisation and preparation go a long way when putting together your collage in Lightroom for the first time.