At this point I can't say may positive things about the design. the parts are mostly too thin to really hold up. I've printed a few helmets so far and this is by far the thinnest. Its large and so its going to have to cut multiple times to get it right, but there is no guidance on how to do that well. I will use Meshmixer and cut it myself but I can't add girth or more printable sections with straight lines. Some guidance would have been great.