Migration - but not quite Monarchs yet

Full oil painting this time. The thin oil underpainting is the sketch and general colour layout.
Next step - correct any design issues and detail the background farms a little. Let that dry for a couple days.
Maybe I should add the waterways and trees, and let that dry for a couple days. 

Oops, now the background is too busy.
So paint over the background to conceal the waterways and trees, and rethink the design elements. I like the dark patch against the main butterfly, but it is too centred and will be lightened anyway when I haze over it for the arial perspective. But can I use that idea somehow? First let that all dry for a few days and see what ideas show up.
My plan was to glaze over the whole thing to make it hazy with distance (i.e. the aerial perspective.) However, I may have to make sure the background fit the concept. Currently, the values are reversed - the darks should be at the bottom and the lights at the top... or maybe not, if they are coming down to the land...
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When the background is finished and dry, I get to paint all the monarch butterflies.