Finished? Nah, there’s always something that can be done to take it to the next level. For this particular tree, if it was mine, I’d consider revealing more of the trunk from the front of the tree. I’d also think about adding some deadwood features for contrast.
Exhibit it as it is now. Enjoy it now that it has fulfilled the vision you had for it for so many years. Then, when the shine of its current configuration eventually wears off for you and you get a little bored with it, come up a new vision for the next 10 years.