i was going to make myself try the shoot without looking challenge, but ended up kind of cheating... i wasn't wearing contact lenses or glasses, so everything was pretty blurry... but not quite the same as shooting completely blind... this is a double (or maybe a triple - can't recall) exposure... went around to various mirrors in the house to experiment...
mucked about a bit in PS, but in the end didn't really do much except add a colour filter...