Hey, thanks for playing!
In response to your question: you can actually nest tiles! It's an advanced functionality, so it's a bit obscure... Something I discovered almost by accident LOL
You can do it by having the Find Drawing and 3D Settings next to each other. Select a tile you want to use as a parent, and in 3D settings click on Mesh > Children and then drag from Find Drawing to the 3D settings window to add a child. You can see it in this crash-course I gave earlier this year. It's in Spanish but the automatic subtitles are not too bad actually!
Hope that helps.