Hi, looks good! i like the idea of a large plant in the back right, off center, hiding the equipment, too.
another thing that might work well is to change the angle/location of the wood on the right, since the two pieces of wood are exactly parallel and even with each other, so it doesn't look as natural as it could be. maybe play with shifting it around so that there is more variety (shifting it farther back or front, and shifting the angle so it's facing in).
55 gallon planted with a pair of Apistogramma cacatuoides, praecox rainbowfish, bristlenose plecos, neon tetras, australe orange killifish, amano shrimp, & bamboo shrimp. Dwarf baby tears, dwarf sag, Amazon sword, guppy grass, moss, java fern, anubias, & several crypts.