This is how it looks now

I don't like the microswords and I want black sand. I also don't want it to look so plain. I was thinking of trying to slope the substrate and slope the rocks on one side. The driftwood tree on the right is anchored to slate so I can't do much to reposition it. I don't want to risk breaking it. Any advice? The other piece of driftwood is just a log. I'd love to see pics of other people's 75g's. Once I have a sandy bottom I'd like to add a small bulldog or some kind of BN Pleco or Cory's. Currently there are 2 Veil Pinoy Angels, 12 Serpae tetras, 10 black Neons, and 4 Oto's. I'd like to add quite a few more fish