How do I fix thick mod podge glitter on a tumbler?

I think you will have to scrape it off and try again. This post may have some tips for you: https://www.youtube.com/watch?v=fLkCckarmic

Brenda can you add more texture and glitter into?

Brenda,

ModPodge is water clean up. I would try adding a little bit of water to it and seeing if you can smooth it out with your finger.

I would try to scrape it off and redo the Mod Podge.

Hi Brenda, To thin your Mod Podge you simple need to add your glue to a suitable mixing container, add some water in a ratio of four parts Mod Podge to one part water and mix it. This tends to let you thin your Mod Podge while still keeping its consistency good enough to not end up with issues in its adhesive properties.