While I agree with BonsaiNut, I see a lot of potential in this piece, sure it needs defining and ramification, but that will come in time. What concerns me is that it seems you have the forest planted much too high in the pot. I realize that this is not the final pot, but at the current planting height, it looks as though you are encouraging root growth far lower than you would want. Maybe I am missing something, but it looks as though the roots were already shallow before being sat on top of more soil?
Will Heath