Hardwoods can be difficult to keep jins as they don't preserve as well as juniper/pines, but they can be useful. You may do some carving for detail then lime sulphur it. You may also think about doing a hollow where the branches were. There's some drawbacks to that, too, but it has its interest.
I agree with Auk, could make a nice windswept. Now that it's established, I'd prune it back much closer to the trunk to start branch work. That front branch in the second picture has a good shoot you could prune to. It could begin the taper, since it's long and straight right now. A few other branches show the same thing.
Good looking material to start with though. Funkiest boxwood I've seen, too.