I had just copied the bottom of the trees for a start. This model is in low resolution (few blocks) so it is hard to create that effect. One way would be to add more blocks to the model (and shrink it so it doesn’t get larger).
If you any of you guys want to do that, I’m ok with it, we later can update the mod with the new models.
Edit: just tested this design. I liked it.
I personally decided not to give it a chance to grow back cause I like it more this way. But if anyone is wondering how to do it, you can insert this:
inside the “components” section of your stump .json file, and this:
to the “entity_data” of that same file.
(next_stage is the alias of the tree you want to grow from it, and evolve_time is how long it will take)