First off GREAT WORK!
Looking at hats from the period, and stills from the film, I think that elastic is the more accurate choice. You also need to add the second row of topstitching to the outer seams of the center panels.
Has anyone replicated these gloves from Batman Begins? These were the gloves that Lucius Fox wore when demonstrating the memory fabric to Bruce. I always thought that these were supposed to be the gloves incorporated into the Batsuit (in universe anyway) but it looks like the costume dept just...
My dad’s business partner designed the Hobbes card for the movie. Here’s an interview with his son (includes pre-production mock-ups)
I just ordered some white military name tape, dyed it with coffee, and cut a stencil out of card stock.