I build bases themed off the world of Baran. It is described as lush, green, crystal clear waters, forests, etc. I've put together a tutorial on how I do my bases in case anyone is interested in doing something similar. The album link is here: https://imgur.com/a/bBvDn
If you have any questions about what I do or products I use let me know. I've learned several techniques in doing these and hope they can help other hobbyists.
Here's a sampling of finished bases that I've done for my army: