Ganamae said:

And I dont know if you have noticed this, but whats up with that trooper to the right..hold his mouth "cape" thingy as he runs past..

it's quite noticeable in the film as well :)

Yeah that happens quite a bit. I guess the Empire is cutting corners on their design, or maybe Darth let one go and the trooper doesn't want to breathe it in. :)

And what's up with the two trooper face-mask designs? One looks plastic and fixed, while another is more flexible. (not from the image, but the film in general) Ahhhh, what're you gonna do?