"artistic talent" is not a term I've dared apply to myself in the past. I had some help with this, with the gradients specifically, and little touches like the coast lines, but the forests, rivers and mountains were painted by me. Still, all the help I received is stuff I'm able to implement myself now, so that's something. It's so nice to have some validation from people who aren't 'morally obligated' to support me, haha.
@tilt and rdanhenry: I see what you guys mean, yeah. I suppose some of it comes down to me knowing a bit more what the landscape is like surrounding the rivers. I justified some of my decisions by saying the land is volcanic in nature, with lots of very rocky ground. That only goes so far though. Such things should probably be illustrated by better definition in the colour gradient, or perhaps cliffs and bluffs, but since I like to consider my maps as 'representative' rather than precise, I was reluctant to make the map too busy. It's something to consider going forwards, though.