About the gas mask you asked: you used one stud (button ones) and put it right above the torso in a angle. (I used two to make it look better) Then you put the goggles down. Its quite hard to explain, so here is this: http://www.flickr.com/search/?q=lego+gas+mask. (Thanks to Master of Legopuppets for showing me this). You don't have to give credit to me. Not my design.