Nice video. Looks like a beautiful place. Since you mentioned that you liked to edit and your looking for feedback, here a few things to think about.
If you like editing chances are you'll love color grading, you might want to check out DaVinci Resolve.
Not sure what your shutter speed was but a general rule of thumb is that you want your shutter speed to be twice your frame rate. This is for the correct motion blur. When your shutter is too fast the video becomes very "steppy" in pans and tilts, especially in 4K.
Also you need to keep in mind the limitations of your camera. This is true of all camera's but I think people who fly Phantoms just want to believe that this doesn't apply to DJI camera's. Your shooting 8bit 4:2:0, it has a very limited dynamic range and is very flat. On my monitor your exposure appears to be about a stop down- which is good, much better than being over exposed. So with some good color grading you could punch up your shadows a bit and maybe add some more vibrant color where you need it to make the scene look more 3 dimensional.
Here a video that I shot with a GoPro H4, Phantom 3Pro and GH4. The challenge there is to grade it so the viewer can't tell the difference.
This is the same except instead of the P3 I used the Autel X-Star Pro