Been awhile since I posted. Here is a juicy screenshot, it's the courtyard in the real world:
I have made a probable mistake, or rather meta-mistake in the design process! It turns out that I need an alternate world, these are little areas of the castle that you visit to obtain certain items. I decided to create this world "realistically", that is, in parallel with the real world. I carefully positioned the doors to this alternate dimension close together, so this area would not be too large, but alas it's really a large large amount of level design.
Anyhow that's what I've been doing for the last six weeks, really. A bit of a detour, to be sure, but it will work out alright in the end. And I have to admit, it's pretty fun crafting levels/items/objects using this game engine and my now-solid skills with it.