Aaron_K

If it were mine, I would be inclined to open the tree up a bit more to reveal trunk and branch structures.

From the photo's, its very hard to discern the "naked" shape of the tree as there is a lot of foliage covering the branches and the photo's are pretty dark too.

Mikey makes some good points which you should consider. The best thing to do would be to take this tree to your teacher to view in the flesh, and suggest the best direction in which to take this bonsai.

Regards,

Aaron