I feel like my house doesn’t get enough natural light in it. I want to be able to increase the amount of light by adding a skylight to my living room. I think that it will be easy enough for me to do myself, but I’m not sure how to do it. My roof is flat, and I don’t know what steps I need to take to properly install it, so it doesn’t leak. What do I need to do to ensure I install the skylight the right way?