Nice work, horizon line is too high though. Is that a cubemap or plane?
It is a curved plane. still looking for a better picture, if you have suggestions please let me know :).
It would be good to remove the Chromatic Aberration (CA; blue-red light shift) from your post processing as can be seen too easily in your first pic above.
CA simulates a defect that most photographers will go to great lengths to eliminate (99% of the time) so it’s weird that you’re using this in a pristine scene here. It would more effectively be used if you were simulating an impact to your camera perhaps, or other special effect, but not when showing off an image like this 
already removed it in the movie.
10 hours ,It’s already very fast work flow. Nice