The first workspace is laid out as a reference for the parts.
The second workspace is the parts nested as close as possible for carving. Feel free to move them around for whatever size your piece is.
The third work space is set up to resemble a injection molded model kit and can be carved to still be attached to the tree. There are extra parts included in the model just like a real one. I have not tested this one but think it could be a fun gift for someone.
If you want to add the grid to the waste board either VCarve it, use a smaller bit for the detail, or enlarge the whole model equally until the smallest bit you have will carve it.