So here's what happened. Last night I decided to color dye my props just because I like the idea of having color coded props. I did the front in yellow and the rear in green. So I decided to fly today and I was getting everything ready. I noticed that my rear props were very hard to thread on the motor shafts but they still threaded on. I didn't think too much about it so I proceeded with installing my removable prop guards. I know lots of people on this forum think they're a waste but I don't share that mentality. Me being a newbie Phantom owner makes me feel much safer using the guards. So I had her ready to go and I start the drone and the motors start to idle. I usually take off at about 80% throttle because I've read too many stories where peoples' aircrafts either tip over or they drift very easily without having enough lift. This is why I always use around 80% throttle. I want my drone to shoot straight up and to be clear of anything and everything as it's going up. Little did I know that I had screwed the rear props on the wrong sides. This meant the drone immediately tipped itself over to one side and that freaked me out. Luckily I was using the prop guards and nothing was damaged besides the two props. Thankfully DJI gives us spares and everything was good. This was an honest mistake and I really have no idea how I goofed up so badly because I always thought you can't screw the props on the wrong way. Today I proved that theory wrong. I was very thankful I was using the prop guards otherwise things might have gotten a lot worse with more damage than what really happened. Lesson learned and I hope that's my one screw up which I knew was inevitable but of course I didn't know when or how it would happen.