Those are *really* effective mountains. How'd you generate them?

The coastline and the mountains and the river are all at somewhat different apparent scales. The fineness of the indentations in the coast to me looks smaller scale than the mountains. And the visible width of the river, with what are probably pretty small islands, seems to be larger scale. Each by itself is awesome, and won't stop a map from looking pretty good, if you have such realistic terrain as that. But I bet the overall effect steps up a notch if the scales of the different elements match.