Those last pics you shown, Harrg.... they're just amazing! Honestly, they are, hmm, I have no other word for it... amazing.
I can't give you any more reputation, but that is worth A LOT OF REP. You picked up tectonics, Wilbur, climate, Pasis realistic tutorials, heightmaps on photoshop for shadows... the whole lot... and turned it into something never before seen around here. Obviously you won't be able to make your entire continent on this scale, your life is just too short for that, but, oh man, this is already an achievement.
Congratulations on the results so far.