1. Spray Paint Your Heart Out!
First, I spray painted the shoes, so that no red would show through. Depending on your shoe color, this may not be necessary. I already owned the spray paint and just went crazy.
2. Podge, Sprinkle, Repeat.
After the shoes were dry, about 30 minutes later, I added the mod podge with a paint brush and sprinkled the glitter on. Some tutorials instruct you to mix in the glitter with the MP, but that did not achieve the right amount of sparkle for me. I just sprinkled over a tray and reused the excess.