I've been on a major popcorn kick lately; both in real-life and mini-life. Since I made the box template before, and now I had to make the actual popcorn.
Next, I found a piece of packing styrofoam (although a styrofoam cup would do the trick) and picked it apart into tiny balls. These are the popcorn kernels.
To make them look buttery (mmm...buttery popcorn), I mixed acrylic paint and high gloss Mod Podge. This will act as the glue that holds the kernels together and gives them coloring.
Using a pair of old tweezers, I dipped the balls of styrofoam into the Mod Podge mixture and stuffed each one into the popcorn bag. The glossy Mod Podge gives it shiny, buttery look, and the styrofoam makes the kernels look fluffy just like real popcorn.