I've been struggling with that very issue for quite some time. Once I got into all the land shading, I felt so compelled to keep going with it that the awkward perspective shift was just dismissed in hopes that it would somehow just "come together"... I feel like that's not gonna happen...
Here's a capture of it without all the ground shading so it doesn't have so much of a drastic perspective shift.
I'll try to work up from this point with other terrain elements (plains, forests, etc...)
And before I forget, thank you for the input!