Nice helmet. I'd recommend reshaping the mail portion, though, as it looks like a flat sheet with symmetrically cut wavy edges made independently of the natural pattern of the chain mail texture stamped onto it.
Here are two quick images showing different ways you could position it: Notice that in both, the edges are vertical rather than wavy. Chain mail is relatively heavy and does not have the tendency to roll or bunch up like a fabric would. Here are two pictures of the aventail on my helmet:
Here are two quick images showing different ways you could position it: Notice that in both, the edges are vertical rather than wavy. Chain mail is relatively heavy and does not have the tendency to roll or bunch up like a fabric would. Here are two pictures of the aventail on my helmet: