Thanks for the eye candies...I like these two which are so different. Make me want to start up another tank.Here's a google search for Iwaguami Style scape for inspiration. This is what more closely resembles your current layout. This style is a little more particular about the character of rocks. There may be things of this style that appeal to you that you'd might want to try since I think you've already accomplished the hard part the plant carpet.
https://www.google.com/search?q=Iwa...X&ved=0ahUKEwiax-OoiqzRAhVk9IMKHfVmAp8QsAQIKg
At this point, I'm at a standstill. Not sure what will become of the carpet I have. Definitely not what I had in mind...long term, that is. They're not spreading with runners...instead becoming more like individual plants. I pulled a few out to show how they're growing...almost 3 inches in length. Not sure what will happen to them after a trim.