1. Make sure the rocks are far enough from the glass that you can get a tool in there to clean the glass on all 4 sides. Your scape looks fine in this regard, but its hard to tell from this angle.
2. It appears your scape goes all the way up to, if not above, the water level. This means you won't be able to put coral on the top.
3. If you intend to add coral, its a good idea to plan for when the coral is fully grown out. For LPS, people usually recommend not going above 70% of tank height with rocks. 50% for SPS. Even lower if you want some space at the top of the tank, above the coral, for fish to swim.
4. This scape doesn't seem to provide much habitat for any fish or inverts. Most fish like caves and nooks and crannies to escape aggression and to use as a sleeping spot. The more habitat you create with your rock work, the more fish you can add and the lower the risk of aggression. I'd recommend looking up BRS.TV's HNSA (habitat negative space aquascape) videos to get a general idea of what things to consider when building your scape.
Note: I've never set up a reef tank, just doing a lot of research in preparation for setting up my own. Take my thoughts with a grain of salt.
