You are getting better!
I saw some maps you made on devForum, and I repeat, you are getting BETTER!
Anyway, your game is colorless, try to add more models and details on the terrain and the walls.
You need to fix those edges.
Also for a thumbalil you can post a picture of your game, like you did in this post.
Yeah, I do need to add colour.
Those edges will be fixed very soon.