years ago when I lived in florida there was a gorgeous tree just outside my upstairs bay window.  It draped its branches and leaves around two sides of the corner of the house where that bay window was situated.  On Sunday afternoons I would sit and write, nap, and dream in that window seat for hours, accompanied by my cat and my roommate's cockatiel, who cohabitated nicely and posed no threat to each other.  This is the tree that came to me for the tree gate.  Very powerful, and it also threaded me into the 2nd lesson with the animals.