Lets bring some more life into this world!
The tree of life is a known idea present in various mythologies, philosophical and even religious traditions. The idea of this tree is to connect all forms of creation.
In Buddhism this tree is supposed to be the one where Buddha sat underneath when he attained enlightenment. As said, this tree has been found in multiple other cultures and in most of them the meaning is similar.
This is not a difficult tree to built since it also has different looks depending on where you find it, but the idea is that the meaning is what it’s important about it. Feel free to take this a the main idea for your Tree of Life but if you find one that you like better remember that the importance of it is the meaning and not how it looks.