I am absolutely loving the contrast and balance. The flow in between suits well.
However I wish the bottom part with lush hills blended better with more distinction in distance- as the foreground's horizon should seem to be somewhat further in depth than it is
Earth real palettes are bitchin', good choice there.
My other irk is that the space hallucination looking neon does not follow the dimension as below it (in my eyesight). It's not something that really can be changed, or easily painted, but never the less I dig the top part too.