Go for it, it's quite fun to do all the different textures, although one needs to pay attention quite a bit when doing tiles (compared to a regular landscape).

I've always thought these types of art pieces were quite fascinating. Perhaps I ought to try my own. This brings an Age of Empires feel to me. I really love everything about it from the texture of the grass - all the way to the mountains. Great job.

Looks pleasant. Good work!

I did six different base tiles so far. The borders are really work intensive as with the introduction of cliffs and relative complex layering of those as well as ramps I had to add sooo many stupid borders ^^

And there's still a bunch of issues with the borders that I have to clean up.
My advise would be to go for a style that embraces the hex structure or even emphasizes it. I wanted to go for a more organic look and was willing to pay the price (guess I still am ^^).
 

Edit: I forgot to mention the six additional ruin / POI tiles I did.

Such a lovely map. How many different tiles you made?

Beauifull work. I'd love to hear some of your thoughts/process around hex borders. Hexagon maps is a favorite format of mine but I've never really dared to experiment with borders.