So pretty, I hardly like to mention anything!

But as you asked...

1 & 7 - should they both be "Oberman", or is 7 actually "Obeman"?

Also, should the fields maybe have some kind of edging - fences, hedges, or even ditches - to keep the pedestrian herbivores out, and maybe some paths leading to them too. Those to the north seem a little detached currently.

I might be inclined to name the bridges as well, though that's probably just me 😁.

But one corner isn't curling-up where the glue hasn't stuck properly, unlike the real things 😉!

Depending on what line thickness you're using, you may get a better result drawing a separate arrowhead polygon and placing it on your line. The automated arrowhead lines can look pretty unappealing, because sometimes the line-end extends beyond the tip of the arrow, as if it's been blunted.

That's a shame, but you could still use it as a hex highlighter for key locations, much as the Ancient Realms and Modern Journeys styles do with circles.

Sometimes getting things to stand out more means just changing the colour or line thickness a little (or font size for text). An outer glow of some kind can help, but it can also make things look too misty, which I think it what's happening with some of the smaller text labels presently. I'm not sure that brown colouring on the labels is working well enough, and even the grey labels could be a little clearer.

The general textures seem fine, although the desert edge is maybe a bit too abrupt (very obvious where the green coloration alongside the river ends currently). That seems to be accentuated by the line of desert-edge dunes north of the river too. The more wavy edge of the dunes south of the river looks more natural to my eye at least.