as a pep build - good going mate.
and if you are wanting to do it just for the 'lets build it from scratch' side of things great, but there are very reasonably priced suppliers for accurate lids nowadays.
seems like a lot of time and work (dont get me wrong, I like pep, but all that FGing, then bonding and sanding etc etc etc).
Also the pep doesnt look accurate to the CGI/movie helmet if that is your kinda thing. It appears to be tapering towards the top, it should be straight down from the side of the dome to the tubes.
enjoy!