Minecraft indoors background

I'm trying to create Minecraft-style blocky backgrounds, but I have no experience creating LoRA. I'm open to suggestions for improvements.

Regarding the images used: I avoided using images that had watermarks or that were not public, and I also avoided constructions with modified textures or blocks. (I think that's fair.)

I tried generating some images but didn't get very positive results; perhaps I lack training or more references.