It’s more believable that those amazing works were done on an etch-a-sketch than those other perfectly straight diagonal roof lines.
Aww, we got an Art Critic here now :)
Anyways, as soon as the Earthquake hits, the Etch-A-Sketch picture will fade quickly before disappearing completely ... then nobody will care if the lines are(were?) perfectly straight or not! After all, this is a gloom-and-doom thread, isn't it ???
/laughs
As for the diagonals, doable, but very tedious. And no, I don't, would never have, the patience to do one.
Oddly enough, there are those that do. Go figure.