I actually like the way it looks now. Gives your coral plenty of room to grow. You may want a few more pieces of rock to aid in your filtration though.
Your aquascape really is the foundation of the look of your tank. I did a ton of research, and looked at as many different aquascapes as i could find. Just google "75g reef" or whatever size tank yours is. I'm not totally happy with how the left side turned out, but here is mine, just to give you an idea. There are a ton of different layouts you can do tho.
I would aquascape it by drilling the rock and using acrylic rod or pvc. Too much "dead zone" in the middle where circulation cannot reach and detritus can build up. I learned that by trial and error.
LOOKS GREAT!! I agree with drboxedwine, that is a great link! i like lots of swim-throughs and openings instead a wall of rock. lets you add more corals! our favorite thing!! and gives the fish a little more space to move. Maybe pick a side where you place the rock is higher then tapers down to the sand. Lookin good :bowl: !