I think it is a very good start, but what you mean is that it is 'too static' with no surprises. To me, everything seems to be in the same line. First, I would break the 'wood line' with some other mid or foreground plants. Then I would put some java fern or anubias on the small piece of wood on the left hand side. If you plant in front of the larger piece of wood, I would leave that bare, as a kind of focus point feature.
Personally I find the coconut a bit distracting due to its non-natural shape. Maybe you can put some moss on top of it, plant around it or find another way of making it less prominent.
Good luck!