Thanks for all the support.
I decided to make the details as a different object I'm yet to decide how to make the "wings".
Well it will be fairly close up, approximately 50% of the scene will consist of this object.
PS. that "bumpy" area that looks a bit mistreated is just the remains of an old bump and specular map.
Edit: The area for the eye seems to still be a little to small in comparison to the reference but if I make it larger the helmet looks more or less surprised.