The inner jacket is actually really easy to make. I didn't even need a pattern to make mine. It actually also depends on which inner jacket you intend on; the first one with the large zipper, the second one with the "invisible" zipper, the third with the collar plate, or the fourth one with the in-cut on the collar and no hold for closing it. Third jacket is the easiest, in my experience.
Cosplays in Progress
The 13th Doctor - Doctor Who 95%
Still need to get - Couple clothing items...and a Paralyzer Blaster.
Mystery Cosplay - ???
Things to do - Armor...lots of armor and makeup.
"Look to the Skies...and the Hero will come..."