Just went through this whole thread, and have this to say Bravo...Bravo...BRAAA....VVOoo!!!
I went searching cause I just picked up a TM last week, I am nervous its a little big to start, but its all about the roots at this point. Well...its always about the roots. Ha
Its about 2 sticks thick(chopsticks). The progression, pictures, the subtle characteristics of the roots add a whole new dimension, specifically how you had the 3 small wedges early on keeping the top, back( I believe?) roots separated, and now its another feature. Although, it looks as though mother nature had intended, but to have the foresight, there is only one way to know how to do that....Experience! Yes, you can read about this type of stuff, but to put those slight changes here and there, and when to do them for what outcome, on what tree, still takes experience. So I say Bravo!
So can I pick your brain quickly? The slight space, top of rock, under the tree, I am guessing you have to change that as it contours with growth? Spagnum? no, just some soil, perhaps dried muck? But if the space were to grow, do we have to let the tree go where it goes, short of cutting the roots, yikes, what else could one do? Sorry for the barrage of questions and/or my spastic brain running a wild. Thanks for allowing us the opportunity to learn from this!
O.k. 1 more point, The pots, not sure if its the shaping or the glaze I love more, and I'm not a glaze type! leave that alone
But again, Experience!