Ok, I've managed to lay in all the forested areas so here's the progress thus far -

UnbrokenIsle_Forests_All.jpg

I'm not completely happy with how the central eastern forest ended up but as it was a little bit of an experiment with generating the outline of the forested area I'm not too worried. I think next on the agenda is to figure out where the villages/towns/cities are located and then lay in some farmland textures.