This is Dragoon signing in for World of Minecraft. I've had experience as an OP in both Yggdrasil and 7chan's unofficial server (do not be alarmed, I do not personally condone the dadaist hilarity of 7chan..at the very least I won't perform it here.), and have created numerous structures (my modus operadis is the creation of symmetrically-designed structures) in both singplay and on the 7chan server.

I think that's enough info to start with. Cheerio.