I've recently come up with the idea for a continent that is stricken by a huge drought, with the only source of water coming from the middle of the land and distributed/controlled by the government. I've been trying to make a map that reflects that, by having the distribution of green/fertile land be more towards the middle and darken into unhealthier grass/sand as it goes further outwards. I'm not too happy with the results though, and as this is my first time I don't really know what I'm doing too well.

I'm using Campaign Cartographer 3 and the method I've been doing is having a few layers of different shades of green and then mixing them using the glow effect. Is there any way to do that that'd look better?

Here's what I have so far.

hA0RNVQ.jpg

Any suggestions as to how to make it more realistic/look better would be welcome.

A little information on the setting if that'd help, the government pumps water through a large pipe system to the various parts of the country. Water distribution is lessened as it gets farther from the distribution center, which is why there's a drop off in green.

Once I finalize how I want to show the drought I'll be adding various pipes going across the land and changing the fertility to match (More green near the pipes, or where the pipes end).


(Repost of my post from the world building forum, just saw this one)