Hi Reiner,

I think probably your best bet for making kind of bubbly type relief work like this would be to use ZSurf, see here: http://moi3d.com/forum/index.php?webtag=MOI&msg=602.7

That's a program that will take a bitmap file and create a "height map" from it and save that as an IGES file, which you can then import into MoI.

This lets you work in a bitmap program to use gradient fills and stuff like that which will then get converted to height values on a surface.

- Michael