What you need:
1. Turn your jar upside down on a piece of cardboard and spray your jar.
2. Let dry for 1 hour.
3. Using a paint brush, brush some Mod Podge on the bottom portion of your jar. Then sprinkle with glitter. It's best to do this in sections so your glue doesn't dry. If you want to seal your glitter you can put another coat of Mod Podge over the glitter.
Notes: Be careful with these jars. Spray paint will chip if scratched and you should not get the outside of the jar wet. These are decorative jars.