I'm currently heavily editing a map_heights.tga file in order to complete the AoVaF map.
Problem is, although I can edit existing heights without screwing everything up, I kind of suck when it comes to create a whole new mountain. Whatever I do, I can't find a way to make realistic and nice heights.

Here's the kind of ugly stuff I usually end up with.



Nothing similar to some new maps or even to vanilla RTW map. Fact is, I dunno what to do to make heights smouther. Anyone got tips for me ?