Cheers all.
@Ascension - I'm honoured!!!
@JF - They're done by hand, but I don't like them too much, they're not 'crunchy enough' for me. I've been practising a new hand drawn mountain style but I've still got a way to go with it. To colour them, I draw the lines on the top layer. Bottom layer is the mid tone, which is more or less a flood fill. Next layer up are the darks and the next layer up are the lights.

The little green foothills were a really nice discovery for me. They're a cheap and easy way to give the map a sense of scale and interest...I'll be using more of them in the future!