Thank you all very much for your feedback.
mrbelvedere - Yes! Rotala mini will work well. I'm also considering doing something with cabomba that I haven't seen done yet, especially in a nano. We'll see how it pans out.
Steven - I love Filipe Oliveira's scapes, but this idea came from a footbridge we have here in San Diego. You can hike under it through a bamboo forest and I was looking up at it thinking "wouldn't this be prettier if all this was green?" (San Diego is pretty dried up and brown in the late summer), so I figured I'd make my own. Ha. And yes, the front to back slope does make for a much more dramatic effect. Thanks for that!
RoseHawke and ianmoede, after reading your comments I couldn't have agreed with you more. I like the new layout much more. Thank you as well.
So here's attempt 2. I promise next week I'll bring my camera to work and get some better shots....