It would be a good idea to get a piece of wood approximately 15' x 12' and place the drone on that. Then get a digital bubble level app free from the playstore. It has the bubble for viewing, but it also shows you the digital x y coordinates. Then use paper to raise each side of the wood piece until you are very, very close and then you know you are level regardless of your home, or desk leveling. I was able to get mine to 0.0 on the x axis and 0.2 on the y axis. Best I could do. Haha, but that is **** close.