How to Make AMAZING Bullet Resistant Armor for $30

My original hope was for this plate to be able to stop the 9mm hand guns, I would've been happy if it succeeded in just that. But I was blown the heck away at the armor's ability to not get blown the heck away. by any of my shotgun rounds. Next step, 5.56 resistant plates maybe?

Music:
Intro song is "Angel Whisperer" by Rameses B, building music is "Every Cloud", also by Rameses B. Action music is "Guile Theme" from Street Fighter.