I like this shot because the other day I was flying (a light aircraft not a drone) down towards Dartmoor and although I didn't have the blue sky (it was really murky) I did have the lying fog in the valleys and it was just so beautiful. This has brought back the memory, so thank you. You might have pushed the blue in the sky a bit too far but I wouldn't do anything to change the haze/mist.
As an aside, I hope you were flying the drone on a hill and it wasn't really as high as it appears to be. Sorry but as a PPL flying from an uncontrolled airfield drones are never far from the back of my mind.