Think time for a rescape.
I find the fishes are not interested in the unplanted area. So the gravel goes.
Thinking of adding a twiggy drift wood towards to the left corner of the tank.
As far as the plants go, the sword would move from its central (well almost) position to somewhere near the drift wood. Going to create a wall around the ludwigia glandosa with the green bocapa, to bring out the red color. The tall red stem plant (Bocapa Red?) goes to the far background.
Scheme is below
In terms of fishes, its going to be 4 Zebra danios, 6 neon tetras, 4 oto (and some amano shrimps/ MTS - not decided on this though).
Tank - 10G
CO2 - DIY (may add a power head near the drift wood and hook up CO2 to that)
Lighting - Natural light
Filter - 170 gph (Hang on)
Substrate - either 100% Amazonia AS or mixed with 35% of Aquarium Gravel (If latter, just remove the plants, the fishes and vacuum the existing gravel well and mix all the current substrate)
I need your advice and comments...