Entry # 20 looks good. Do you have a different helmet to paste in to look at. I can deal with this one but just like to see another option for the helmet. I like everything about #20.
I just have one question for you. Are all the photos of the helmets, posted on the site yours (meaning can I use them as a reference for drawing a helmet)? I am asking this question because I drew the last helmet based on the picture from your site, and if you do not have full copyright to these pictures, i will have to withdrew it.