More plants, first off. Not sure what to say about the hardscape... not masterful, I'd agree, but hardly ugly. Most of us have a long way to go before approaching "masterful"...
I can't tell if that's anubias on the left, but if so, get the roots out of the substrate and tie it to a rock. Anubias roots feed by pulling nutrients directly from the water and don't like being buried. They'll be ok for a while, because they're super hardy, but eventually start to die.
Your Anubias will be fine so long as the rhizome is above the substrate. Depending on what substrate you're using you might even use a root tab under it. I've had Anubias planted in similar ways that have flourished for several years & continue to do so. That is also how many people grow Anubias while emersed too. I've got several varieties of four different Anubias species in my emersed tanks, probably 25+ individual plants, all in a substrate mixture that is mostly soil based with rhizomes just above the surface of the substrate.
Although, while submersed I usually prefer to plant them somewhere that the roots will have room to grow super long! It's one of my favorite features of these plants!