Wash the jars with mild soap and water or use rubbing alcohol; let dry.
Dab glass paint directly onto the mason jars with a sponge or spouncer. You're going to put a little bit of paint on the sponge end, press it to the glass, and pull up.Repeat this motion up and down. Work your way around the jars until they are completely covered. Let dry.
Paint the wood circles with complimentary colors of acrylic paint. Give several coats and let dry.
Add the doilies or other embellishments to the tops with Mod Podge and let dry.
Pick ribbon to go around the middle of the jars and trim to fit.
Glue the ribbon to the jar in the middle, and then glue the wood circles on top where the ribbon meets. Let dry.Add LED lights if you are going to keep the lids on. You can use real tea lights with the lids off.
Notes
You have a few options for paint - mixing Mod Podge and paint is NOT one of them. You need a frosted paint to make the beach glass effect. Jars painted with paint and Mod Podge or food coloring and Mod Podge look like this. They don't look frosted.The options you have for paint are as follows:
Find a frosted glass paint in the color of your choice (which is sometimes hard to find)
When you add paint or food coloring to the frosted paint, you'll use about 4 - 6 drops. Do a small test on a piece of glass (you can scrape it off before it completely seals). You can always add more color but you can't take it away.