Help Needed. Anyone?

by Brian Png
(Kuching, Sarawak, East MAlaysia.)

Buxus Harlandi?

I got this tree 6 years ago.
I pruned the messy branches and a few dead branches.
I reported it twice ever since and maintained it.
Just don't know how to prune down further. Any suggestions? The tree is quite tall 31" from top of the pot to it's tip and about 32" across.