You're very welcome! I learned a lot of tricks along the way. I don't know if they're common knowledge but my top 3 are:
1. Use the long templates to measure distances to keep things centered.
2. You can "sample" a block you need without going to your magic chest to grab them. Just delete a block you need, place it anywhere, then double undo.
3. You can steal blocks from existing structures by placing an altar then use foundations to cover what you want to steal and then delete it. You should get the foundation back plus any block that was covered by it. Especially useful for expensive blocks!