Hello! Am building a city where I was planning to have one part of the town elevated by a hill (Sort of like the town of Fallcrest from the DnD 4th ed DM guide book) and then have a river run through it. I've been fiddling with different layers and effects but I really don't seem to be able to get it right. Any tip or tutorial available on how to make a hill/make the ground look elevated an then a waterfall down that hill?