I've only made one before and made it like thin bc consistancy. I was told that you don't want to make it too thin, otherwise it won't hold together. I was a little disappointed that it wasn't super smooth like color flow, but I was told you would always have some tiny lines.
Also, I used saran wrap taped on top of my design and after freezing it came off like a charm.
I use thin consistency adn I've found that once it's on the cake and comes to room temperature and crusts, you can use the foam roller to get out any of those nasty lines that are still visible...
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