I would take all of your branching pieces of wood and bundle them together so they look like they are coming from the same structure. (Tie them together, silicon, something)
I would then probably move the branching bundle directly to the left of the large rock, towards the back. Then fill in some of the area with smaller rocks, preferably more lack rock (or whatever that large one is).
Then stick all of the crypts from the left side of the tank around the rocks and wood structure, towards the front of it.
Then take all of your stem plants and plant them in and around the back of the wood, and move your sword from the center to the right corner, behind the large rock, but more towards the front of it then in the center.
Now it's 1/3rd aquascaped.
Hope that may have helped.