How about this one.................
There's something weird about the sea in the distance... like it's the end of the world. But it's a nice setup.
Maybe it's the scale of the scene, with the size of the trees and the sub the river is probably only 2 or 3 miles long. The Earth curves by about 8 inches every mile
It's just because the angle of the horizon is tilted a few degree and not set to 0.
And i like submarines!
A little closer...............
Lovely rock surface and that cloud is awesome
looking much better.