The process of making a Christmas tree out of lights is quite simple. First, you'll need to gather the materials: a sturdy base, several strands of lights, and some ornaments. Then, you'll want to start by arranging the lights in a way that creates a tree shape. This can be done by starting at the base and working your way up, or by starting at the top and working your way down. Once the lights are arranged, you can add the ornaments to add a little bit of extra flair and decoration.