I can certainly provide you with some tips on how to put up outside Christmas tree lights. Firstly, make sure that you have the proper lighting fixtures for the type of tree you're putting them on. For example, if you have a traditional fir tree, you'll need to use lights designed for outdoor use, such as C7 or C9 lights. If you're using a fake tree, you can use any type of light that's safe for outdoor use. Next, you'll want to start by laying out the lights along the bottom of the tree, making sure that each section has an equal number of lights.