Gary, thickness and all everything they are saying is ok an important only if someone thinks they are going to do close up work as you are doing to show it off. 99% of all renders using a helmet is going to be a distance shot with one or more figures. If anyone at that distance can tell the edges aren't beveled, then they are superman. Texture is everything and you are right there with yours. I say sell it for 5 bucks or more. Helmets were shiny unless purposefully dulled with mud or lots of paint. I have seen literally thousands of wwii photos and you will always see a shine. This is why the germans and americans had either helmet covers or helmet nets. It allowed extra camo to be added, but also helped dull the shine.

I think it looks great! Maybe someday I will finish my improved german uniforms and assorted accesories. Good luck with your item