Just read your post. Nice looking graphics.
How do you download the vasl graphics, and incorporate them into a game ?
Given the way TotH handles terrain, there is no easy way to import or change en masse.
Using Photoshop or GIMP, been creating my own graphics or scraping from creative VASL boards to replace the individual terrain graphics in the terrain.png file. Some of this has created terrain sets I really prefer over others out there, with a favorite being one with 3d shading for elevations and features plus others of my preferred VASL artwork features [shell holes, rough, etc.].
Other fave to do is to replace some of the existing terrain features with others of my own, to create a bit more diversity and perhaps make for interesting maps/scenarios [bearing in mind the existing terrain effects]. Replacing lumberyards was a common theme.
Honestly, haven't done in some time and [sheepishly] had never posted any as terrain mods...been too busy with work/life of late.