Thanks freehand. That's what we talked with the tale's writer: colours and... Green of course. But yea it's just the start though i have most of the areas located on map and already made some hand drawn brushes ( mountains, hills etc.) this last week end. I'll show them tonight. So next steps are putting all areas, drawing rivers, probably do some more brushes, coloring the whole map, adding labels and a few more elements...
I made the sea using a mix of 2 textures layers made with several soft grunge brushes then added a little touch of a filter on one layer, add the wavy touch (though I didn't want then too obvious) and adjust a few color/contrast