Okay, this is only the second map I've ever made. This is being done in Photoshop CS4, with some textures done in Genetica. It's pretty massive - 5000x5000px.

Now, I'm concerned I might have gotten myself into a bit of a hole here - quite simply, the colour palate is so rich that I have no idea how to go about annotating it clearly. I've included a couple of examples with example names to give an idea of what I'm talking about. I've also included a general overview showing the whole map so you can tell me how wrong all the rivers and everything is

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Any ideas?