Not sure why the pic isnt showing up - sometimes it does this on the school computers. Its on the 9th page of my gallery.
A - Id personally go with a dwarf form of Alocasia. Basically a minature elephant ear. I have one in my leuc viv I got off of ebay, and it stays under 10 inches. The leucs love to hang out on its leaves, and it provides a cool shading effect.
B - Some kind of trailing/hanging plant. Maybe get some Ficus pumilia started up there and let it go crazy.
C and D - Look like they could use some ferns, maybe rabbit's foot or similar. ive also had some luck with ferns in the Nephrolepsis genus.
E and G - looks like they could do real well with some viv-friendly dwarf orchids. I skipped orchids in my first viv, and regret it. PM Rob (littlefrog) - he sells 'em!
F - Id do another fern, like in C and D. Make all three be the same species, but let F be a little bigger. Itll tie everything together.
H and I - various terrestrial plants, such as Peperomia, jewel orchids, Selaginella, Begonia, and plenty of leaf litter!
Around the stream/waterfall/pond, get some java moss started, as well as some emersed crypts, plants of that nature. Depending how humid the area around the waterfall is, maybe try some java moss.
To fill in the 'blank' areas, Just get some stoloniferous Neos and stick em in! Several of those and a couple of vining epiphytes would do nicely.
Im sure others will chime in. Good luck!