Really, it boils down to two things:
Are the fish happy?
Are you happy?
What we think shouldn't matter!
But having said that....
(You knew that was coming!)
I'd find some other decorations; the ones you have, IMO, detract from a freshwater tank (I'm assuming thats what you have), with the corals and such.
Get rid of the bubbles. I'll admit, when I started out I had them, but they got "old" (to me). Maybe if they were behind a plant or something instead of being out in the open as they are...
As Coler said, a little less symmetry. Mother Nature is messy, things are rarely neat and in place!
Don't take my comments to heart or badly; just that I like a Natural appearance to my tanks!