I use Paint.net mostly because it's extremely adaptable and I have an immense amount of experience using it's very neat and well-done features, I have many add-ons already but they're mainly for enhancing regular pictures et cetera. I'm wanting to know what add-ons would be good for Borders, Coastlines, and maybe link a tutorial on how to make mountain ranges? I can probably translate photoshop or GIMP work into Paint.NET tools easily.