The large stems of Eusteralis stellata in the right side of the arrangement seem to make the tank look smaller than it actually is. I would try using more hedge-like plants that branch profusely for such a layout --Rotala sp Green, Hemianthus micranthemoides, Heteranthera zosterifolia, Rotala sp Nanjenshan, Ludwigia arcuata, Ludwigia brevipes, Micranthemum umbrosum.
You need something to cover the bases of the Eichhornia diversifolia, Rotala wallichii, Ludwigia sp Cuba, and Eusteralis stellata. Those mentioned in the previous paragraph can be pruned much, much shorter and kept that way through pruning over the top instead of incessant topping and replanting.
Carlos