Just had an idea for a great way for creating VERY movie accurate weathering of the armor . . . at least in terms of placement of scratches and things like that.
I have access to a computer projector, but I suppose the same could be done with an overhead projector as well, but . . . take a nice detailed full shot of the piece of armor you're working on from our fabulous reference CD (Thanks BB! ), and literally project it onto YOUR piece of armor. Now all you have to do is trace where every scratch and scrape goes. Then get out your liquid mask and start going to town. You'll obviously have to trace again after every round of painting but, seems like a great way to me of getting virtually 100% accurate weathering.
You could even use this technique I suppose on the flatter parts of the helmet like the cheeks. And with some creative work and stretching in photoshop you could maybe even do the rest.
Anyways, just my thoughts as I sit here and twiddle my thumbs as I patiently await all my parts to start arriving! hehehe