I played around a bit with the blocks, and decided I prefer it with aqua as the corner stone instead of brown. With that change, I think I'm OK with what I've got and will start putting them together. I think it de-emphasis that spot, which allows the eye to see the larger diagonal better. With the brown, it's like the eye stops, and then the brain tries to see a pattern there, and there isn't really one so it gets confuses, well at least my brain gets confused!