I used a combination of foam, wire and thick cardboard for my mask (it would've worked well if it hadn't gotten bent in the car on the way to the con). It wasn't heavy at all, but I don't think it could ever really be called comfortable. To make it...well, less uncomfortable
, I suggest that you tie the mask on instead of attaching it permanently to the black hood so that you can pull it up while you move around. If you have the mask down far enough to match the reference image it will obstruct your vision significantly and you'll give yourself a headache, and you'll already be pretty blind from the hood to begin with. If you need any help, feel free to PM me!