Yeah I see what your saying... There is a slight hint of it on that pic you posted but its not as deep as the ones on the commercial. I guess if you painted it with a little shadow like the above, it would work... Again good work, looking good.
well hope im not tooooooooo late, probally am but just thought of this, http://www.walmart.com/catalog/product.do?product_id=5515989
click on see all 6 images, it zooms up on them adn shows it fro mthe back and from and its the halo 3 helmet becuase it has 3 dips, sorry for the late response hope this helps.