My costume was built from plans provided by p00k1333 on theRPF. The template files can be found in this post. I suspect he’s much taller than I am, so it took a little trial an error, but these plans are beautiful.
Honus’ Animatronic Stargate Helmet
https://www.instructables.com/id/Animatronic-Stargate-helmet/
Link to templates (on page 2) by p00k1333 on theRPF
https://www.therpf.com/showthread.php?t=226483