For the metal bits I would do a papier mashe cast of the areas you want things to go, i would advise putting vasaline on those areas so that you can get it off again and when you have your cast, build them up with wires and foil and silver paint, it's amazing what you can do, also light weight so won't be too bad to wear and when you do wear it i would advise using a bit of liquid latex but remember - shave off the body hair or you will be swearing for a week when you rip all the hair off. lol
and for the face and hands i would visit a web site called www.reelmagik.com and he can do custome orders for latex face masks. He's really good I've used him before, and he will give advice for free.
And for the rest of the body either papier mashe/lots of green make-up or liquid latex with latex putty underneath for texture - you may need help putting it on.
BUT WOULD LOOK SO AWESOME.
I would be happy to help if you like - I'm not bad with a brush! lol
Oh just remembered - you can get teeth veneers like that too, can't remember what site off hand but I can find it for you if you want
hi there thanks for the advice still not sure what im going to do tho got a bit of time to still think
i loved coming as lorne last time it was good fun