This looks great! I always love your ripariums, and how you switch up the plants and try out different kinds in your set-ups! I think some manzanita would look great underwater. Maybe even with some moss attached, though that may be too much green haha. I can picture some branches sticking out of the water near the side with some air plants attached, I think that would look really cool, and that way the positioning wouldn't block the view of the plants in the back. I also love the idea of using the cork board and attaching mini-orchids to the top, (I know that wasn't your tank, but still, it's awesome!)