International borders

[Steel General]

You might want to look at Ascensions tutorials to get the exact settings he uses for his hills and/or mountains (maybe he'll drop a response in this thread), but its under FILTER > RENDER > LIGHTING EFFECTS.

I've only used them a few times so you'll need to play around a bit to get a outcome you like.

[Ascension]

Here are two different types of Lighting Effects that I use, the first for mountains, the second for flatter stuff. I'm not sure how it will come out since your using an image from an atlas, but you will need the mountains to be grayscale.

[argaur]

Ok, i find a problem then... i have 2 kind og greys for mountains. I extracted it from a physical map, so they are mix in the same layer... has photoshop any option to select from a layer only 1 color? dark grey for example?

If not i´ll get crazy selecting all - Thanks anyway