Well, the first step is to make sure you have the right type of lights. There are several different types of lights available, including incandescent, LED, and string lights. You'll need to decide which type of lights you want to use, and then make sure you have enough of them to cover the entire tree. Next, you'll need to determine the best way to hang the lights. Some people like to wrap the lights around the tree, while others prefer to drape them over the branches.