[Photoshop] How to improve a simple map?

Well, I hope that some of you can give some tips on how to improve the looks a simple map of an area. This link shows a map.

It’s just a symbolic map to show grassland, forests, mountains, roads, towns and so forth. I would like to improve the looks of the map, with a more realistic (or Fantasy like) look, the mountains reaching high into the sky and the forest looking dark and “treelike” - such things.

I’m not that good with Photoshop, but still learning. Any suggestions will be much appreciated :slight_smile: