Mostly its airbrushed strokes, I blurred it a little on another layer to blend it together better but really I need a lot more resolution in the height map for it to work on this scale. Which I'm having difficulties with. The ocean was easier to do because of the colours I think. Also it's easier to just ignore detail in the oceans because there is no expectation or real need for it. I'll keep going over the tutorials though, there is a lot of good stuff in them, getting it in my head however...