Well I had to google it for a good image and I am by no means and expert but I would probably approach it as follows:
I don't have that big shaped pan so I would bake in a pyrex pudding bowl or round bowl. Carve out the contour lines down it a little.
I would use fondant to creat the shape of the hat brim.
The torch shape reminds me of one of those icecream cone cups (the ones you can bake cupcakes in)
I would cover it up with fondant to match the helmet and then maybe form a light bulb shape and stick that inside the cone cup thingy!
For the glass I would probably cut a piece of clear acetate out for that part!
Well hope this gives you a few ideas