Thanks for the tips! Yeah, I do have some splitting, so I can take that out. Hooray for layers.

The ocean-to-ocean river is actually two rivers coming off the same mountain, but maybe that's silly? I meant for that region to be like Greece, with lots of channels and islands, but I didn't really follow through.

I see what you mean about the glow - on the coastlines, right? It's got two layers on top of the flat water color. Maybe if it didn't feather so far from the coast?