If anyone has 4k to blow and wants an accurate Man of Steel costume, you can get the costume and a replica of Cavill:
"This striking life size recreation of Superman, as portrayed by Henry Cavill in Man of Steel, is the ultimate collectible for serious Superman fans. Standing 7 feet tall, this fiberglass statue features exacting detail, including the suit's intricate design pattern & texture. The stunning costume's raised texture was re-created utilizing the very same 3D data that was utilized to create the film's costumes, thereby assuring the ultimate level of authenticity.
This Superman statue comes with a cloth cape, and a custom base. Ships in a protective crate. Measures approximately 84" x 39" x 23". Designed by Oxmox studio and made by Muckle in Germany. Imported by Section9 Entertainment."
Sounds pretty awesome... I wonder just how authentic the costume is, but it sounds like the most-likely way someone can truly learn how the costume is assembled.. I'm pretty excited about this but of course would not spend that kind of money