I'd suggest making the substrate at the back higher. You will get some more depth in your tank.
As for the right side. If you rearrange the front rock that it is on its side with the pointy end (the one that is facing the back now) pointing toward the same place at the top of the tank the wood points to (somewhere to the right of the light reflection in your picture). I don't know if that will work, but it is better in my head.