Casting a Zer0 Helmet (Part 1) with Rebound 25 and Plasti-Paste II

This is our first time casting anything (other than my daughters life cast of her head, lol).
So we are in NO WAY to be confused with experts! We made a few mistakes (didn't need as many coats with thinner....registry keys could have been done better) but the end result was a 100% workable mold which ultimately lead to a successful helmet pull!
Thanks to our prop making friends who helped us out with tips along the way (you know who you are!).
This is part 1 of a 2 part series.
Materials used; Smooth-On Rebound 25 for the silicone mold, Smooth-On Plasti-Paste II for the mother mold (outer shell) and Smooth-Cast 300 for the final helmet.

We do not own any of the rights to the music contained in the video. Please check out these awesome artists...
Music for this video is as follows:

WD by Nacho Cantisano at ccmixter.org
http://ccmixter.org/files/ngc2602/33809

Something about the Fire - Adele vs Daft Punk a Carlos Serrano Mix   / app_220150904689418  

Florence and the Machine-Cosmic Love mix by Seven Lions
  / cosmic-love  

Crazy Love- The Alex Lang mMix by DJLang at ccmixter.org
http://ccmixter.org/files/djlang59/10579

Per Anima - Instrumental by Timberman
http://ccmixter.org/files/Per/23477