I have two Suggestions, one is About a detailed mushroom cap style roof that actually looks kind of like a mushroom cap the top of the roof would have mushroom texture you can recolor, the under belly of the cap would be feeling like what you see under the cap (complimenting the mushroom table and stools that you have added) , the roof would be slightly hollowed as to being on a tower the mechanic to place it would be like the pyramid roof at a hexagon or octagon or any kind of angular shape. The other suggestion I had was a custom flower window like a cherry blossom or a rose or making two different ones it would sort of feel like its based on a church, but more specifically it would look like a medieval fantasy colorful window the glass would appear as though it's a textured wavy almost foggy. For anyone anything I've mentioned above you should be able to color, but the textures I mentioned will not be interchangeable, and for the window shapes you can do marble or wood whatever feels better for bloxburg. Optional but for the roof idea you can add vines/flowers to decorate on top and color both the vines and the flowers to ones liking.