This is indeed something I have considered for quite some time already. The challenge is that I keep on changing the working methods constantly. But maybe I could gather the best practices into a guide.
In a meanwhile here are links to few small guides related to the techniques I use. I hope these will come handy.
Heightmaps: http://www.cartographersguild.com/sh...ad.php?t=16688
Houses: http://www.cartographersguild.com/sh...ad.php?t=28219