How do you prepare glass wine bottles for painting on?

Lillian
by Lillian

I've taken labels off and removed all glue by wiping down with vinegar. I'm using acrylic paint but wonder if I should spray the bottle with a clear acrylic before painting so that my paint will adhere to bottle more easily? I want to do an intricate design. I tried something easy and found I had to go over it several times. Any suggestions? Should I also spray when completed? Thanks

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