I've change the colour of the forest text to black and given it a size 5 green outerglow. It's looking better already.
That's an interesting comment about the coastline. At the moment it's a 1pt stroke at 100%... I've dropped it down to 25%, and maybe it does look better? I'll have to leave it for a bit and see how i like it later. Changing the blend mode to screen at 25% also looks good.
*fiddle fiddle*