The thing is ... I watched all the tutorials at the Larian youtube channel and searched a bit around the web. And it seems like the Terrain tools are pretty easy to use. But my problem is that everything im making looks "not realistic" enough. It just doesn't feel like a real world. I hope this makes sense to you xD because my English is not the best.

Can you maybe recommend me some videos and/or tutorials that explain how you make a good looking terrain that looks like it could be used in a game. At the moment im looking at the original game and I try to copy what they did. But some general guidelines would be rly nice.