Pretty good so far!!!
I just have to say:
Trim the moss so that they don't get too messy, if you know what I mean
It would also be nice if the stems plants in the back was denser, that way we won't see the actual stems of the plants, which can give an "empty" feeling.
Overall, the crypts and the java ferns are looking great, and it would be better to have more plants on the right side to balance things out; but not too much.
Keep it up!