Thank you for the kind words folks.

@ThamasR: I totally agree with you regarding the rivers. Unfortunately I'm somewhat tied by the existing game geography, which seems to use the rivers as a way of defining the borders of nations. Maybe if I have time I'll look at creating a version with more realistic rivers.

@Topologist: It's all hand drawn via tablet, even the hills. I still need to work on my hills, they never seem to sit well with the rest of my geography. As for tutorials, I've learnt so much from Jon Roberts's site http://www.fantasticmaps.com/ but also from simply studying the wonderful maps posted here on the forums.