Okay, I'm working on the graphics for each floor. Here is the upper level, mid level, and lower level. I still need to do the sewer/basement, and underground mine or cavern. I'll do those soon.
I've also added a few more props such as buckets, tools, sacks, etc. that I will spread throughout the castle to breathe a little life in it and make the rooms less empty.
I've spent a lot of time refining my template with very careful naming conventions and organization so I can easily change materials on floors or whatnot and easily move my objects around.
Here is the upper level. This level will have the best loot but also fully armored knights who won't be happy that you are there. This level will be more fancy with painted walls and whatnot. The lower levels will be more barbaric.
Here is the mid level. It's not as fancy as the upper level, but not as dark as the lower levels. The loot here will be okay, and the guards will be moderate.
Here is the lower level. It will be dark, and the loot won't be as great, but the guards won't be as ready to attack either (or as hard to beat).
I'll be spending this week on the two lower levels beneath these and also working on some more props to spread throughout the castle. I will also be doing the floorplan for the castle so I can get started making these into actual rooms.