You know, you are probably right, thanks!
I've seen for the marine people how they cover the GS with epoxy, then sprinkle with the reef sand or crushed coral or what not. That's why I figured I'd be able to just cover random pieces of Styrofoam with the great stuff, cover that with small pieces of driftwood and sand, then cover that with more GS and more sand and driftwood, and repeat as I get the layers I want. Then stick a lot of the driftwood branches and glue it in with the great stuff, then cover that with more sand and driftwood branches. And then finally, cover the whole thing with some sort of spray sealant (or maybe the marine epoxy mixed with sand..?
I'm curious to see how that looks, would you mind taking a picture, or finding a similar image on google of it if possible? I think I know what your talking about, but then again I'm not sure.
That is a wonderful idea though, making smaller versions to see if I can make it how I want to make. Then if I mess up, no biggey. I never would of even thought about doing that, even though it's the most obvious thing to do! Lol.
I'm sure mini scale, the supplies wouldn't cost a lot either, so that would be good as well

And I can ask on here if what I did could result in any issues/or is unsafe too!

(Maybe I'll try making a background for my 2.5 gallon tank? Nothings in there at all right now, though I might make it heavily planted and have moss balls and just put some MTS or ramshorn snails in there, or possibly a couple shrimpies? I don't know what the minimum size would be for say cherry shrimp or those blue shrimp or something
Thanks so much again, I was feeling quite discouraged earlier, now I am happy and enthusiastic again. Now just have to wait for that darn pay check this Friday...