My $0.02 since you asked for it
- Add some gimbal buffer in your settings to get rid of the hard stops at the end of movement
- edit out any jerky moves (0:53)
- I'd start with a wider establishing shot to give an idea of the location, then go closer
- the crossfades seemed a little too drawn out.. (0:20)
- the last shot is way longer than it needs to be (a full minute)
- watch your histogram around large bright areas - 1:15 is half blown out but that's down to the lack of dynamic range on the camera
- include some low shots.. not every shots needs to be completely obviously from a drone, plus the buyer will never see it from that perspective
And most importantly.. get advice from someone who actually knows what they're talking about