Quote Originally Posted by ChocoKinesis View Post
Any pointers for creating the hills, or would greater depth while bump-mapping the grass be sufficient? I have a vague idea of how I might like to arrange highlands and lowlands, but no real clue on how to implement it.
Greater depth while bump mapping the grass could provide you with something hillish. You might want to do this only in certain regions (use TLS to make a mask, make a bumpmapped layer with the hills, then mix together to get 'hilly regions').

You could also do hills as high-resolution, low-amplitude mountains. You'll probably want more, smaller peaks than you had with the mountains (you might want to explore turbulent noise and multiply layer mode). It's unfortunate that the turbulence functions like horizontal and vertical lines so much, though.