Well, first you need to make sure you have the right type of lights for your tree. You'll want to choose either incandescent or LED lights, depending on your preference. Once you have the lights, you'll need to carefully wrap them around the tree, making sure to cover the entire surface. If you're using incandescent lights, you'll also need to make sure that the bulbs are evenly spaced to prevent overheating. Once you've finished wrapping the lights, you can then plug them in and enjoy the festive glow.