Greetings from Denmark!
- I think your tank looks beautiful... And I do think your Bromeliad works as a center piece, maybe it all just needs time to mature. And to settle in?
Maybe you could keep a wandering jew in right hand side of your background. And a Ficus with small, heart shaped leafes on that root!?
And also you could try to move your upper liana to go from bottom left corner, to upper right corner in order to stop the eye from "reading" the tank to easy...
- Another trick is to decorate tank from left to right because your eye naturally seeks to read from left to right, it makes the tank not so easily read!
Hope I make sense as English is being my second language...
/Flemming.