Glitter on tumbler won't smooth out.

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I spray painted a metal tumbler with a greenish color on the bottom half and a lighter color on top. after it dried I used mod podge to make what is supposed to look like drips coming down the light part. Then i sprinkled fine white glitter on it. It looked really good. After a day when it had dried I put epoxy on it to seal it and make it smooth and shiny. My problem is that I can't get the glitter to be smooth. Does anyone have an answer?

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