Andre, I like your layout a lot, simple and natural, and offer a lot of potential.
Some suggestion for your consideration.
Wood: the shape of the drift wood is on the "thick" side, it offer good texture, but kind of "heavy" for the size of your tank
Spacing: the placement of the driftwood created a natural "path" in-between, this offer some sense of spacing and in time, will increase the layering, I just wander whether it will work if we keep the Glossostigma elatinoides away from the middle foreground, leave a trianglar space as if a path leading into the space between the two set of drift wood, we can use some small stone to build a "fence" right underneath the surface of substract.
These comment only reflected my personal preference, probably from a slightly different perspective.
