I'm new to the planted tank and aquascaping, but from all the different and beautiful tanks I have seen on this forum, I've noticed that that whole "less is more" thing is out. With a lush green backdrop, plants filling in the sides, and some driftwood and nice rock caves, the tanks look amazing! IMHO, I think that the most beautiful tanks are the ones people describe as "jungles."
Look at pictures and see what you like. You will find your flare. Your tank has a lot of potential.