I am making a demake of Mount&Blade called Musket&Nade, set in fictional country with a map similair to that of europe. The technology is working nicely, i will be able to start working on the game mechanics soon, but the map gives me some problems. I need an image which will not lose too much quality (pixelization won't be apparent) when zooming in 5 times. The way i picture it is having a picture of terrain without too much contrast, with color transitions being smooth.
I tried to make this multiple times, but it didn't quite work out, so i am asking you...
Can you take the attached template image and draw some smooth looking terrain over it?
The color should be like the respective place IRL, except for yellow zone, which should be desert'ish.
Btw, how is my logo?

An example of how smooth the transition should be (map of M&B:Warband)
http://images.wikia.com/mountandblade/images/b/b6/MapCalradiaWarband.jpg