(If this is already a topic and I’ve overlooked it, please tell me)
I 've decided that I wanted to start making life-size Kanohi Mask. I was really excited to start my first mask when I realized: How am I even supposed to this? I don’t even know what to make it out of! Any tips would be greatly appreciated. Thanks!
Start with one of the original Mata masks, i Suggest the Hau 
@Sidorak Ok thanks! I’ll start with a basic mask, but I still don’t know exactly how to make it…
Cardboard, duck tape, spray paint and maybe add some lenses like Eljay’s Miru has.
Since it’s Halloween season, you could get a basic costume mask and add to it and modify it into the proper kanohi.
Thanks @RangerSilver6 and @Risebell !
Paper mache, wire frames and plaster of paris. nuf said.
In the middle ages you had to make a masterpiece to become a master. What about making a mastermask and then getting the job?
Can we get @Eljay over here to offer his thoughts? I myself have never done anything like this so I don’t have any tips. 
I’d be of no help here, sadly. =P I just picked up a Miru, and started carving the shapes out of cardboard. It’s why it looks so bad. I just had to wing it, and once I had a version that looked right and fit, I painted it.
Looks bad? Why, I’ve never seen a better cardboard Miru myself!
And I found that it was great fun making my plaster Akaku Nuva. Took forever and eventually broke because of misuse.(cough siblings cough) If I had any good pictures of the mask and the process I would definitely post them for you. Maybe this year I’ll make the new Akaku…
I hear that @Crunchy has some experience with life size Kanohi. 
@Eljay thats exactly what I did 