So after trying several ways to make my tiles go 3d I was really disappointed. And then today I saw this pic from February and beyond article.
See the red marks for cutting? And everything clicked at last.
So here is my terraing design for final battle. I really hope that I have enough of plain 4x2, 2x1 and 2x2 tiles, but the best part of this way of doing it is that you don't really ruin the tiles. They still can be used in their usual way.
That's great. Now work-work and then on to cutting cardboard.
Oh, yes. My terrain project.