No no, the plants are good, but maybe you want to move them around a bit to hide those filter intakes and plumbing.
Get some sand, but try not to get sand that is too bright, otherwise the tank will be too bright to look at.
That piece of wood is nice put is too far forward. It is sitting nice, just not in the right place. Also, try and get some more twiggy wood, having it coming down from the top, or from around the other bogwood.
Also move that big grey rock more to the other side, and have some smaller rocks of the same colour around it.
I know, it sounds like a lot of time, but will make your tank look very natural.