Thank you! It's only been two weeks since I redid the whole thing so it still has lots of growing in to do.
You can use focal points a few ways. One large one a little off the center or nearly all the way to one side is common and very effective if you're doing a hardscape in just one place.
If you want two centerpieces it works well to have one "main" larger hardscape to one side (usually the left) and another "supporting" smaller hardscape on the opposite side. The idea is to make it non-symmetrical. Even keeping taller plants in the area of the larger centerpiece and smaller plants around the smaller rocks or wood. Sort of like a shrub land or meadow coming out of a densely forested hillside.
If you explore around for pictures of large tanks you'll see examples of this natural way of laying out a tank. The Dutch method for planted tanks is nice, too, though it uses a completely different esthetic principal that downplays the hardscape and relies on groupings of contrasting plants to carry the visual impact of the tank. I like the natural methods, as do most people these days.
