I used my scale modeling painting skills to add fake shadow effect under helmet, eyes and other parts of the helmet to look more like real Ranger from the New Vegas main menu picture. Also helmet have used and damaged look...

To install just put data folder into your New Vegas folder

OPTIONAL: For those who are using ADAM Mode, copy crhelmet_n and crhelmet into:

......Steam/steamapps/common/Fallout New Vegas /Data/textures/ADAM/armor/combatranger/helmet