Looks very nice. What else are you planning on adding?
1 piece of constructive criticism. I'd be a little concerned about the depth of your sand. At that depth it will easily build up pockets of carbon dioxide. There are a couple of thing you can do about it, stir up the sand every time you do a water change, which is a pain when you have lots of rockwork. Or I'd suggest adding some Malaysian Trumpet Snails. They burrow in the sand, constantly churning it as well as taking care of any food that lands on the bottom. They do breed like crazy, but extras can always be removed.