I tried to export my 3 block tall model but it says it didn't export elements because of invalid postitioning. So I moved it 1 block lower to see if that'd work, but when I spawn the block in game part of it is 1 block underground.

How can I move the floor lower so it will spawn correctly when ...

I’m making a custom block model that’s smaller than the average size block. When I place it in the game it has a full block outline instead of being something similar to how the flower works where it’s only around the object. How do I change this?