I've been practicing map making and creating my own Terrains through L3DT - although alot easier on Reforger, I am using a few software programs: Blender, GIMP, Google Earth Studio, L3DT, and Mikero
I am able to create high maps that represent real world historical locations based off maps and topographic techniques
Processed in ARMA 3 Tools:
https://pmc.editing.wiki/doku.php?id=...
Topography - height maps - Image editing
Geography - game design