Don't feel dumb, we all have asked/done/said dumb stuff before...just read DV3's posts. (J/K Don)
edit: some things I will note; the white eggcrate seems to attract algae growth, the flow director on the end of your powerhead reduces the flow.
The Alternative Reef on R2R makes some pretty interesting structures. I'm not saying buy from Gooch, as they are a bit on the pricey side, but use that as inspiration to construct your own. I'm unsure of his materials, I'm sure its a trade secret, but from what I gather its either clay or aquarium putty with a nice texture on it.
Some of his designs