zen

I just think that the top is a bit leggy and unrefined so much that it really causes the tree to look like a young shrub, as opposed to a "tree" , in the virt that I did the main thing is just taking off some of the top and trimming up some of the little stuff poking out here and there.
The big change would be a simple shift in planting angle to get the trunk to leave the soil at an angle, this adds a bit of drama to a tree that is pretty much all about drama,...you see in visual arts/design you want to have cohesive visual cues, in other words all parts of the object should reflect the same subject, now there are times when contrasts work very well, I personally like using contrast to bring attention to certain aspects of the whole theme,...but you do have contrast already with the trunk being so thin, full of movement, and long, versus the foliage being kinda small and concentrated or dense.
This has the potential to be a quite nice literati tree, but you do want it to seem like a big tree in small scale.
All this and what others have said as to the treatment of this tree are simply advice, as that's pretty much what you asked for, BUT, and this is a BIG BUT,...if you don't like the advice, or see something different for the development of this plant,...simply thank us for our 2 cents, and keep following your OWN vision,...you should always work to bring out what YOU see in your tree, should someone here or elsewhere make a good suggestion that might help you reach the fruition of your expression, then all the better, but if not , hey it's YOUR tree, you have to live with it at the end of the day(or in bonsai the first three to five years).
Jeremy M.C.

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"Although profoundly "inconsequential," the Zen experience has consequences in the sense that it may be applied in any direction, to any conceivable human activity, and that wherever it is so applied it lends an unmistakable quality to the work."

~ Alan Watts (1915-1973)