Wash the vase with soap and water, then pat it dry with a soft, clean towel. Wipe the entire vase down using rubbing alcohol. This will get rid of any oils that might prevent the paint from sticking., You do not have to cover the entire vase with painter's tape. Instead, wrap some painter's tape around your vase, just above where you want the gold to end. You will paint everything below that line., Run a credit card over the tape. This ensures that the edges are firmly sealed against the glass. It will help prevent the paint from seeping under it., Shake the paint bottle well, the pour a small amount onto a plate. Use a foam brush to pick up the paint, then dab on a thin layer onto the glass. Don't worry if it looks sheer.Apply the paint going in the same direction, ie: up-and-down.
If you can't find any gold leaf paint, try gold enamel paint instead. It will give you a similar look., It's very important that you wait, or the paint may not cure properly. Once the two hours are up, apply another light coat of paint.Apply the paint going in the opposite direction, ie: left-and-right.
If the paint still looks sheer after this, let the paint dry another two hours, then add a third coat., How long it takes for the paint to dry depends on the type of paint you are using. In most cases, it will take about 24 hours.Refer to your bottle of paint for specific drying times.

You can peel the tape away after 2 to 3 hours., If you have not yet done so, carefully peel the tape away. Your lines should be crisp and neat. If there are any chips, fill them in using a thin brush and gold leaf paint. You can also use a gold leaf pen instead.
Clean the vase.
Mask off the areas you don't want painted with painter's tape.
Seal the tape in.
Start applying gold paint to the vase with a foam sponge.
Let the paint dry two hours before applying another coat.
Let the paint dry completely.
Carefully remove the tape.
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