@Blink: Thanks, I'll try that.

Now here are some more screenshots from a cave a made today.
It's placed in Level 1 and took me all day!
I'm so glad you like my shots and I hope you'll enjoy the game when it's ready.
Before I change anything or "add more detail", I want the hole game to work and the levels to be ready, because otherwise I will only work on the improvements and not on the actual game. But please go on posting critics, I'll put everything on my todo-list.

now here the screens:
(The torches are new)